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Gepubliceerd in: Journal of Child and Family Studies 4/2024

Open Access 15-01-2024 | Original Paper

Mother-Father Differences in Risk Factors for Postnatal Psychological Distress: Results from the German SKKIPPI Cohort Study

Auteurs: Ariana Neumann, Marie Bolster, Natalja Lisewski, Katja Icke, Thomas Reinhold, Franziska Schlensog-Schuster, Christiane Ludwig-Körner, Lars Kuchinke, Thomas Keil, Stephanie Roll, Anne Berghöfer, Julia Fricke

Gepubliceerd in: Journal of Child and Family Studies | Uitgave 4/2024

Abstract

The postnatal period is a potentially vulnerable time for families and can be associated with psychological distress in mothers and fathers. The aim of this analysis was to identify mother-father differences in symptoms of postnatal psychological distress and their risk factors. Cross-sectional screening data for postnatal psychological distress included postnatal depressive (PDS), anxiety (PAS), and obsessive-compulsive symptoms (POCS). Using baseline data of 4984 mothers and 962 fathers from the German SKKIPPI cohort study, we conducted an explorative multilevel logistic regression. Mothers were more likely than fathers to report PAS (OR 1.55, 95% CI: 1.00–2.41, p = 0.051) and POCS (1.38, 1.03–1.83, p = 0.029) but not PDS (1.15, 0.76–1.74, p = 0.509). Risk factors associated with psychological symptoms in mothers and fathers were life stressors, history of mental illness, and unsuitable pregnancy timing. Most risk factors were similar in mothers and fathers. However, relationship problems, having a child with a serious illness or disability, and the receipt of state payments seemed to have greater impact on fathers for some outcomes. These associations require further attention by researchers and should be considered by practitioners in the management of postnatal mental health. The SKKIPPI study has been registered in the German Clinical Trial Registry on February 8th, 2019 (DRKS-ID: DRKS00016653).
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Becoming a parent is one of the major events that people experience during their lifetime. For some parents, this event may not only bring joy, but also stress or feelings of being overwhelmed. In both mothers and fathers, postnatal depression and anxiety disorders represent the most common psychological illnesses after birth (Bradley & Slade, 2011; Meltzer-Brody et al., 2018). Regarding postnatal depression in mothers, earlier studies found prevalence estimates that ranged from 13 to 19% (O’Hara & McCabe, 2013; Underwood et al., 2016). In studies from Germany, where our study took place, estimates were lower ranging from 3 to 6% (Kurstjens & Wolke, 2001; Reck et al., 2008; v. Ballestrem et al., 2005). For maternal postnatal anxiety, systematic reviews reported prevalence estimates of 8.5 and 15% (Dennis et al., 2017; Goodman et al., 2016). In Germany, Reck et al. (2008) found a prevalence of 11% for maternal postnatal anxiety. Also, there is a growing interest in research on obsessive-compulsive disorder (OCD) in the postnatal period. Past studies showed prevalences ranging from 2.4 to 11% in mothers (Miller et al., 2013; Uguz et al., 2007; Zambaldi et al., 2009).
However, the risk of developing postnatal mental illness is not restricted to mothers. Previous research identified prevalence rates from 1 up to 9.2% for postnatal depression in fathers (Bradley & Slade, 2011; Cameron et al., 2016; Rao et al., 2020). In Germany, symptoms of postnatal depression were found in 7.8% of fathers (Gawlik et al., 2014). For postnatal anxiety, the prevalence estimates ranged from 2.4 to 18% in fathers (Bradley & Slade, 2011; Leach et al., 2016). Nevertheless, other study results suggested that anxiety in fathers increases during pregnancy and birth, but decreases in the postnatal period (Philpott et al., 2019). Studies on postnatal OCD in fathers are still rare. One study reported a prevalence of 1.8% for postnatal OCD in fathers (Coelho et al., 2014). Whereas research about postnatal mental illness in mothers is established, more studies regarding fathers are required.
Postnatal psychological distress does not only negatively affect mothers and fathers, but also other family members. A systematic review and meta-analysis by Thiel et al. (2020) found low to moderate associations between paternal and maternal depressive symptoms during the perinatal period. Several studies have found that postnatal psychological distress in mothers (Field, 2010, 2018; Glasheen et al., 2010; Kingston et al., 2012) and fathers (Glasser & Lerner-Geva, 2019; Kerstis et al., 2016; Sweeney & MacBeth, 2016) had a negative impact on parenting behavior, the caregiver-infant relationship as well as the child’s health and development. Moreover, it was found that children with two depressed parents were at even higher risk for negative outcomes than children with only one depressed parent (Burke, 2003). Therefore, it is of major interest to consider both parents when dealing with postnatal mental illness to ensure the best possible conditions for the child’s health and development.
Finally, it is important to detect risk factors for postnatal psychological distress and to explore their generalizability for mothers and fathers. A history of mental illness, current or past sexual and physical abuse along with high life stress such as lack of social support, relationship dissatisfaction and an unplanned/unwanted pregnancy have been identified as risk factors for mothers (Beck, 2001; Bell et al., 2016; Bener et al., 2012; Field, 2018; Hutchens & Kearney, 2020; Underwood et al., 2016; van der Zee-van den Berg et al., 2021). Whereas sociodemographic factors like young age (<30 years), a higher educational level and being employed were identified as risk factors for maternal postnatal anxiety symptoms (PAS) (Bener et al., 2012; Field, 2018); young age (<30 years), an age greater than 34 years, a high and low educational level as well as unemployment were found to act as risk factors for postnatal depressive symptoms (PDS) in mothers (Bell et al., 2016; Bener et al., 2012; Underwood et al., 2016). Additionally, the mother’s health and personality as well as child and birth-related aspects seemed to be associated with postnatal psychological distress in mothers (Anding et al., 2016; Beck, 2001; Bell et al., 2016; Field, 2018; van der Zee-van den Berg et al., 2021). When looking at postnatal psychological distress in fathers, a history of mental illness, a low educational level, unemployment, high life stress such as relationship dissatisfaction, work-related or financial stress, low parental self-efficacy, having a partner in a more prestigious occupation, an unplanned/unwanted pregnancy and maternal mental health problems were identified as risk factors (Ansari et al., 2021; Bradley & Slade, 2011; Giallo et al., 2013; Philpott et al., 2019; Wang et al., 2021). However, it is still unclear whether these risk factors are equally associated with postnatal psychological distress in mothers and fathers and studies that simultaneously observe both parents are lacking (Anding et al., 2016). Especially studies with German samples are missing. Moreover, the postnatal period is an especially vulnerable time for parents, and it is important to detect high-risk individuals that need further support and to provide appropriate support. Further research about risk factor differences could potentially help to clarify whether individual support, screening tools or intervention programs are necessary for mothers and fathers in the postnatal period. Moreover, it could help to close research gaps and guide future research on risk factors. Therefore, the aim of the present study was to assess differences between mothers and fathers regarding different symptoms of postnatal psychological distress and their associations with sociodemographic, psychological, pregnancy and birth related factors as well as life stressors.

Method

Study Design

The German SKKIPPI project (evaluation of parent-infant psychotherapy using prevalence and intervention studies) consists of three work packages: two randomized trials and an observational population-based cohort study (Eckert et al., 2020; Fricke et al., 2021; Mattheß et al., 2020; Sprengeler et al., 2021). The aim of the latter cohort study was to identify postnatal psychological distress and potential risk as well as protective factors for postnatal mental health. The cohort study had a two-step screening design (Fricke et al., 2021). The first screening step included an online questionnaire for mothers and fathers, which was aimed to be as brief as possible and with simple language to reduce selection bias and increase participation rates. Mothers who showed an elevated stress level within this first screening step were invited to take part in the second, more thorough screening step. This second step comprised a detailed structured psychiatric-diagnostic telephone interview and questionnaires to assess mental health problems, possible regulatory problems in the child, and the use of health care services. This paper focuses on data from the first screening step of the cohort study (i.e., on cross-sectional data).

Sample

For the population-based cohort study, a random sample of mothers and fathers was drawn up to 12 months after birth by the registration offices in Berlin, Leipzig, and Flensburg (Germany) in January 2019. The sample size was chosen according to birth rates and the population size of the different cities at the time of sampling (Fricke et al., 2021). The mothers received an invitation letter with a link to take part in the study online. The letter was primarily addressing the mother but included two participation codes, encouraging the fathers to fill out the online questionnaire as well. The screening data was collected from March 2019 until July 2020. Parents were included if they met the following criteria: (a) being the biological or adoptive parent; (b) having a child aged 12 months or younger at the time of the sampling; (c) being at least 18 years old; (d) registered in Berlin, Leipzig, or Flensburg; (e) able to understand German, English, Turkish or Arabic language, and (f) providing written or online informed consent.

Measures

Outcomes of postnatal psychological distress

Representing the most common mental illnesses in the postnatal period, PDS and PAS were measured using the well-established Patient Health Questionnaire-4 (PHQ-4; Kroenke et al., 2009). This brief self-report consists of a 2-item depression scale (Patient Health Questionnaire-2; Kroenke et al., 2003) and a 2-item anxiety scale (Generalized Anxiety Disorder-2 scale; Kroenke et al., 2007), which represent the core symptoms of depression and anxiety. Both scales have been recommended for screening purposes in postpartum women (e.g., Chae et al., 2012; National Institute for Health and Care Excellence, 2014). A score of 3 or higher in the individual categories was counted as a positive screening for either PDS or PAS.
In addition, postnatal obsessive-compulsive symptoms (POCS) were assessed using two items from the Zohar-Fineberg Obsessive Compulsive Screen (ZF-OCS; Fineberg & Roberts, 2001). The items were phrased as: ‘Is there any thought that keeps bothering you that you would like to get rid of but can’t?’ and ‘Do you have to repeat actions over and over again that actually seem pointless to you (e.g., compulsive hand washing, checking the stove/coffee machine)?’. The screening was counted as positive, when at least one of the two questions was answered with ‘yes’.
When considering these three symptom groups it is worth noticing that they share common features and can be highly comorbid with each other. However, they all have unique features, and their distinction is of major importance for the right treatment of symptoms (e.g., Goodwin, 2015). Therefore, all three symptom groups were considered.

Potential risk factors

Information about potential risk factors for postnatal psychological distress was collected in the screening questionnaire. The selection of risk factors was based on previously published studies and cut-offs were defined on a consensus basis, determined by a group of scientific experts from the fields of psychology, pediatrics, medicine, public health and data science (Fricke et al., 2021). Sociodemographic risk factors included parent’s age younger than 20 years, receipt of state payments, support through early intervention programs, being a single parent, poor German language skills (self-assessed), and a low educational level according to level 1 of the International Standard Classification of Education (ISCED; UNESCO Institute for Statistics, 2012). In addition, pregnancy and birth-related factors such as multiple pregnancy, emergency caesarean section, preterm delivery, and pregnancy described as happening at an unsuitable time were assessed. Having at least one child with a serious illness or disability, having three or more children under the age of six years living in the household and having a chronic illness were additionally considered. Referring to professional, family, relationship, or financial problems and the burden of lack of social support as ‘strong’ or ‘very strong’ was also rated as a potential risk factor. Furthermore, parental mental health aspects that were considered as risk factors are a history of mental illness (including depression, anxiety, obsessive-compulsive disorder, and other mental illnesses that were diagnosed in the past) and describing current impairment caused by alcohol or drug use as ‘some’ or ‘explicit’. Describing the relationship with the child as ‘rarely’ or ‘never’ feeling close to the child was also counted as a risk factor.

Statistical Methods

Questionnaires were filled out either by one or both parents separately. When the mother and the father of the same child filled out their individual questionnaires, we accounted for the clustered structure of the data in the analyses. Parental pairs share various life circumstances; thus, their data is assumed to be correlated (not independent). A random intercept multilevel logistic regression, which accounted for the nested structure of the data, was used for each of the three outcomes for postnatal psychological distress. Two different models were fitted. The first was an intercept-only model (model 1), which contained a fixed as well as a random intercept. This model was used to take the variability among parental pairs into account and to determine whether there was dependence within parental pairs on the outcome variables. Based on model 1 the intra class correlation coefficients (ICC) were calculated to assess the clustering effects. For the second model, all predictors and sex*risk factor interactions were added to the intercept-only model to explore potential mother-father differences (model 2). Odds ratios with 95% confidence intervals and explorative p-values were reported. Interactions that resulted in odds ratios >1 indicated that the association of the risk factor with postnatal psychological distress was greater for mothers. Odds ratios <1 suggested that the association was stronger in the group of fathers compared to mothers. Since this is an exploratory analysis, no formal level of statistical significance was set, and there was no adjustment for multiple testing. Only complete cases were included in the respective analyses, which resulted in a varying number of participants for the different outcomes. Risk factors that had very few positive cases and were not reasonably estimable were excluded. Consequently, being under 20 years old, being a single parent, reporting current impairment caused by alcohol or drug use, and rarely or never feeling close to the child had to be removed as risk factors. Furthermore, only few cases had a low educational level (ISCED level 1). Hence, ISCED level 2 was also counted as a potential educational risk factor and was combined with the level 1 cases. IBM SPSS Statistics Version 26 was used for all data analyses.

Results

Participants

Out of the 29516 parental pairs that were invited, 5956 gave consent to participate in the study and 5949 participants provided data (Fig. 1). Overall, 4984 mothers (4981 biological and 3 adoptive mothers) and 962 biological fathers fulfilled the study criteria (N = 5946). Parents of 5151 children participated in the online screening questionnaire, 4356 were filled out by only one parent and 795 by both parents. The response rate for the first screening step of the SKKIPPI cohort study was 17%.

Sample Characteristics

Table 1 shows an overview of the main sociodemographic and psychological characteristics of the sample. Detailed results of all screening variables from the SKKIPPI cohort study were summarized by Fricke et al. (2022).
Table 1
Sociodemographic and psychological characteristics of mothers and fathers in the population-based cohort study of the SKKIPPI project in Germany
Characteristic
Mothers (n = 4984)
Fathers (n = 962)
n
%
n
%
Age group (in years)
≤29
778
15.6
88
9.2
30–39
3708
74.4
649
67.5
40–49
497
10.0
203
21.1
≥50
1
0.02
22
2.3
Region of recruitment
Berlin
3963
79.5
745
77.4
Flensburg
67
1.3
14
1.5
Leipzig
813
16.3
171
17.8
Other
141
2.8
32
3.3
Country of birtha
Germany
4190
84.7
786
84.0
Other
756
15.3
150
16.0
Educational levelb
Low (ISCED 1)
24
0.5
7
0.8
Middle (ISCED 2)
695
14.1
127
13.6
High (ISCED 3)
4196
84.9
796
85.1
Unknown
29
0.6
5
0.5
History of mental illness
Depression
738
14.9
69
7.4
Anxiety
282
5.7
31
3.3
Obsessive-compulsive disorder
35
0.7
7
0.7
ISCED International Standard Classification of Education
amothers (n = 4946), fathers (n = 936)
bmothers (n = 4944), fathers (n = 935)

Postnatal Psychological Distress in Mothers and Fathers

The descriptive analysis revealed that PAS and POCS were more prevalent in mothers than in fathers, while PDS was similar (Table 2). This was also seen in the multilevel models (Figs. 24), which accounted for correlation among parental pairs and tested significance of the findings. Being a mother compared to father was associated with PAS (OR 1.55, 95% CI: 1.00–2.41, p = 0.051) and POCS (1.38, 1.03–1.83, p = 0.029) but not with PDS (1.15, 0.76–1.74, p = 0.509).
Table 2
Postnatal psychological distress in mothers and fathers participating in the population-based cohort study of the SKKIPPI project in Germany
Outcome
Mothers
Fathers
n
Positive Screening (%)
n
Positive Screening (%)
Postnatal Depressive Symptoms
4955
458 (9.2)
944
84 (8.9)
Postnatal Anxiety Symptoms
4953
537 (10.8)
944
70 (7.4)
Postnatal Obsessive-Compulsive Symptoms
4948
1207 (24.4)
938
185 (19.7)

Risk Factors for Postnatal Psychological Distress in Mothers and Fathers

Postnatal depressive symptoms

Concerning PDS, an association with various risk factors was found (Fig. 2). Especially life stressors such as having professional or relationship problems, lack of social support and having three or more children under the age of six years living in the household were associated with PDS. The only pregnancy and birth-related risk factor that was associated with PDS was an unsuitable pregnancy timing. No association with the sociodemographic risk factors was found. Additionally, a history of mental illness showed some association with PDS. Most of the sex*risk factor interactions were not associated with PDS. Nevertheless, the interactions of sex with relationship problems and having three or more children under the age of six years living in the household showed some negative association with PDS, suggesting that the association of these risk factors with PDS was stronger in fathers compared to mothers.

Postnatal anxiety symptoms

Figure 3 shows all of the results for PAS. Life stressors such as having professional problems and lack of social support along with a history of mental illness were associated with PAS. Furthermore, no pregnancy and birth-related risk factors or sociodemographic risk factors were associated with PAS. Merely the receipt of state payments showed some association with PAS. Also, for PAS no association with most of the sex*risk factor interactions was found. However, the interactions of sex with the receipt of state payments and lack of social support showed some negative association with PAS, meaning that the association of these risk factors with PAS was stronger in fathers compared to mothers.

Postnatal obsessive-compulsive symptoms

Multiple life stressors and a history of mental illness were associated with POCS (Fig. 4). None of the sociodemographic risk factors were associated with POCS. Preterm delivery and an unsuitable timing of pregnancy were the only pregnancy and birth-related risk factors that showed some association with POCS. The only sex*risk factor interactions that seemed to be associated with POCS were the interactions of sex with preterm delivery and having a child with a serious illness or disability. These interactions suggest that having a child with a serious illness or disability had a stronger association with POCS in fathers compared to mothers and preterm delivery had a stronger connection with POCS in mothers compared to fathers.

Random Effect Estimates and Model Fit Statistics

The ICCs for the parental pairs in model 1 were .030 for POCS and <0.001 for both PDS and PAS, which suggests that the correlation in the answers of parental pairs was rather small. The overall percentage of accuracy in classification of model 2 ranged from 79.3 to 91.5%, with a sensitivity of 12.2 to 16.9% and a specificity of 97.6 to 99.1% for the different outcome variables. Considering the fact that the models were used to detect potential relationships with the outcomes and not for prediction, these values are acceptable.

Discussion

Main Results

We found that mothers compared to fathers were more vulnerable to PAS and POCS, but not to PDS. There were various factors that seemed to be associated with postnatal psychological distress in this sample, in particular professional problems. Life stressors in general seemed to have a negative impact on postnatal symptoms. A history of mental illness and an unsuitable timing of pregnancy were additional risk factors that were connected to postnatal psychological distress in this sample. Sociodemographic risk factors showed only little or no associations with the three outcomes. Furthermore, the results suggest that there are only few mother-father differences in the observed risk factors for postnatal psychological distress, which highlights the importance of supporting both parents in the postnatal period.

Comparison with Other Studies

Whereas mothers did not seem to be at higher risk for PDS in this sample, other studies that investigated postnatal depression in mothers (prevalence ranging from 9 to 27.5%) and fathers (prevalence ranging from 5.4 to 9%) found higher prevalence rates in mothers (Anding et al., 2015; Anding et al., 2016; Ballard et al., 1994). Prevalence estimates from studies in Germany revealed similar proportions for mothers (ranging from 3.3 to 11.1%) and fathers (ranging from 7.8 to 9.8%) regarding postnatal depression and anxiety (Gawlik et al., 2014; Kurstjens & Wolke, 2001; Reck et al., 2008; v. Ballestrem et al., 2005). In Iran, Mahmoodi et al (2017) found postnatal somatic disorder (21 vs. 7.3%), anxiety (21 vs. 6.5%) and social dysfunction (25.8 vs. 6.5%) to be more prevalent in fathers. Differences in fathers and mothers regarding depressive symptoms (11.3 vs. 12.9%) and postnatal psychological distress (21 vs. 12.9%) were not significant. Even though there is a tendency for mothers to be at higher risk for postnatal psychological distress, findings are mixed, and more research, especially in regard to fathers and POCS, is needed.
Multiple factors seemed to have an impact on postnatal psychological distress. This included different life stressors. The role of elevated life stress was explored in earlier studies, which also underlined its adverse impact on postnatal mental health (e.g., Anding et al., 2015; Ansari et al., 2021; Beck, 2001; Field, 2010; Hutchens & Kearney, 2020). A history of mental illness was also found to contribute to postnatal psychological distress in this sample. This finding is consistent with other studies that looked at risk factors for postnatal depression and anxiety in mothers and fathers (e.g., Ansari et al., 2021; Beck, 2001; Field, 2018; Wang et al., 2021). Further risk factors that have been suggested in earlier studies were sociodemographic characteristics (e.g., Ansari et al., 2021; Field, 2010; Underwood et al., 2016). Nevertheless, the sociodemographic factors assessed in our analysis did not seem to have a great impact on symptoms of postnatal psychological distress. Most of the characteristic pregnancy and birth-related risk factors, which showed associations with postnatal psychological distress in earlier studies (e.g., Anding et al., 2016; Field, 2018), failed to predict postnatal psychological symptoms in our study. A pregnancy-related predictor that was associated with symptoms of postnatal psychological distress was an unsuitable timing of the pregnancy. This is in line with results from previous studies (e.g., Beck, 2001; Bener et al., 2012). Preterm delivery acted as a potential protective factor for POCS in our study, which was unexpected as it was previously found to have an adverse effect on postnatal psychological distress (Carson et al., 2015; Field, 2018; Ionio et al., 2016). Being a parent with a chronic illness and having a seriously ill or disabled child were associated with POCS in our sample. So far, research regarding POCS is scarce. A possible hypothesis to explain this finding could be that chronically ill parents or having a child with a serious illness or disability causes additional worries and challenges that potentially contribute to the development of these symptoms.
Interactions of the predictor sex with potential risk factors were inspected to identify a mother-father-specific relevance of the risk factors. Past studies found that mothers were affected by their own personality, critical life events, a history of childhood violence, perinatal, birth and infant-related factors more than fathers (Anding et al., 2016; Dudley et al., 2001). Fathers seemed to be more affected by their perception of the mother’s personality style and mental health as well as relationship aspects (Anding et al., 2016; Dudley et al., 2001). In their Iranian study, Mahmoodi et al. (2017) additionally stated that socioeconomic characteristics and being consent with the pregnancy played a bigger role for postnatal psychological distress in fathers, whereas mothers were affected by the mode of delivery more often. In our analysis, most of the included risk factors for postnatal psychological distress were equally relevant to both parents. However, some mother-father differences were observed. The protective effect of preterm delivery on POCS seemed to apply to the fathers but not mothers of this sample. This result is in contrast to studies that found preterm delivery to have a negative effect on postnatal mental health in both parents (Carson et al., 2015; Ionio et al., 2016). Additionally, for POCS, having a child with a serious illness or disability tended to be a greater risk factor for fathers in comparison to mothers. Further research is needed to explore these associations. Furthermore, there were some indications that fathers were more affected by relationship problems and receipt of state payments. This supports findings from studies which emphasized the role of socioeconomic and relationship aspects concerning postnatal psychological distress in fathers (Anding et al., 2016; Ansari et al., 2021; Dudley et al., 2001; Mahmoodi et al., 2017). Even though the gender gap in domestic labor is slowly decreasing in Germany, mothers still perform the majority of childcare, and the ‘male breadwinner family model’ is still common (Jurczyk et al., 2019; Steinbach & Schulz, 2022). This could explain why fathers are specifically affected by financial struggles (resulting in the receipt of state payments), because they feel responsible for the financial situation of their family.

Strengths and Limitations

A major strength of this study was the large population-based sample, which was based on a stringent recruitment strategy via local registries. Thus, it was possible to get a broader insight into postnatal mental health problems of parents from different regions of Germany, which was not limited to parents who happen to be treated in a clinical setting after birth. Another strength was the exploration of PDS, PAS and POCS simultaneously in a sample of mothers and fathers.
However, some limitations should be noted. First, some risk factors that were found to be relevant in other studies could not be included in the analyses due to small case numbers. Only very few participants of the SKKIPPI cohort study sample were younger than 20 years. According to the inclusion criteria, only people aged 18 years or older were allowed to take part in the study. Consequently, only a limited number of teenager parents were recruited. The small case numbers for other risk factors such as (self-reported) current drug or alcohol abuse could have been caused by social desirability. Additionally, we excluded being a single parent as a potential risk factor from our analyses. Since only the mother received the study invitation letter, there was a higher likelihood that parents who live together would take part in the study. Especially single fathers potentially had a lower chance to receive the study invitation and therefore were less likely to be included. Accordingly, there were less fathers (N = 962) than mothers (N = 4984) in this sample. It is possible that only less distressed, non-single fathers took part in our study, which potentially caused selection bias. This could have led to the underestimation of prevalence rates for postnatal psychological symptoms in fathers and an underrepresentation of risk factors in this group in our study. Secondly, the results are based on cross-sectional data and temporal or even causal relationships can therefore not be established. Thirdly, outcomes of postnatal psychological distress were assessed using screening instruments only to keep the screening questionnaire as brief as possible and achieve a higher participation quota. Therefore, the detection of postnatal psychological symptoms was based on exploratory short self-report measures and not on clinical diagnoses. Finally, the generalizability of our results is limited, and we cannot rule out some selection bias. The response rate was only 17% and people with higher educational levels were overrepresented in the sample (Fricke et al., 2022). Even though the sample was population-based, it was certainly not representative for the general population of Germany, but perhaps to some extent for the areas where the recruitment took place. In addition, a small amount (<5%) of the screening data was assessed during the COVID-19 pandemic, which could have potentially impacted parental symptoms.

Conclusion and Implications

We found that mothers were at higher risk of developing PAS and POCS than fathers. Most sociodemographic, psychological, pregnancy and birth related factors as well as life stressors did not show mother-father differences, which highlights their relevance to both parents in the postnatal period. However, risk factors such as having relationship problems, having a child with a serious illness or disability and the receipt of state payments seemed to have a greater impact on fathers for some outcomes. These associations should be explored in future research and considered when dealing with paternal postnatal mental health in practice.
Longitudinal studies are needed to examine temporal relationships and to further validate the results from this study. They should ideally start during pregnancy and follow up participants after birth to allow for more reliable conclusions about potential causes and relationships. Furthermore, future research should include more fathers to prevent small case numbers. Additionally, future studies should aim to reduce self-selection bias and particularly should try to include more parents with a low socioeconomic status.
Based on our findings we suggest for clinical practice to pay attention to potential life stressors like lack of social support, professional or relationship problems, a history of mental illness and timing of pregnancy in mothers and fathers. Especially professional problems seemed to be a relevant risk factor for symptoms of postnatal psychological distress in this sample. Therefore, solutions for work-related problems such as paid parental leave or flexible working hours need to be considered by policy makers and employers. Since most risk factors did not show mother-father differences, healthcare professionals should focus on both parents after the birth of a child, because they both are susceptible to being affected by characteristic risk factors of the postnatal period.

Acknowledgements

We would like to thank Melanie Liedtke and Burgi Riens for the data management and data cleaning, respectively. Moreover, we thank the student research assistants (Ina Temeschinko, Isabelle-Valentine Springer, Maike Stolz, Maximilian Leschinski, Melisa Celik, Paula Kuper, Sali Al-Rubaiey and Stella Hoffmann) for managing appointments with participants and conducting standardized telephone interviews.

Compliance with Ethical Standards

Conflict of interest

The authors declare no competing interests.
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Metagegevens
Titel
Mother-Father Differences in Risk Factors for Postnatal Psychological Distress: Results from the German SKKIPPI Cohort Study
Auteurs
Ariana Neumann
Marie Bolster
Natalja Lisewski
Katja Icke
Thomas Reinhold
Franziska Schlensog-Schuster
Christiane Ludwig-Körner
Lars Kuchinke
Thomas Keil
Stephanie Roll
Anne Berghöfer
Julia Fricke
Publicatiedatum
15-01-2024
Uitgeverij
Springer US
Gepubliceerd in
Journal of Child and Family Studies / Uitgave 4/2024
Print ISSN: 1062-1024
Elektronisch ISSN: 1573-2843
DOI
https://doi.org/10.1007/s10826-023-02748-0

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