Introduction
Methods
Setting and participants
Measures
Sociodemographic and clinical characteristics in a random sample of the Dutch population
Sociodemographic and clinical characteristics in post-MI patients
Clinical significant depression and anxiety
Health status
Statistical analysis
Calculating SF-36 domain scores
Calculating PCS-36 and MCS-36 component summary scores
PCS-36 | MCS-36 | |||||
---|---|---|---|---|---|---|
The Netherlands | USA | The Netherlands | USA | |||
Oblique | Orthogonal | Orthogonal | Oblique | Orthogonal | Orthogonal | |
Physical functioning | 0.328 | 0.411 | 0.424 | −0.042 | −0.216 | −0.230 |
Role physical | 0.244 | 0.258 | 0.351 | 0.079 | −0.023 | −0.123 |
Bodily pain | 0.312 | 0.369 | 0.318 | −0.081 | −0.169 | −0.097 |
General health perception | 0.276 | 0.291 | 0.250 | 0.028 | −0.073 | −0.016 |
Energy/vitality | 0.095 | 0.000 | 0.029 | 0.265 | 0.283 | 0.235 |
Social functioning | 0.113 | 0.044 | −0.008 | 0.238 | 0.229 | 0.269 |
Role emotional | −0.054 | −0.193 | −0.192 | 0.341 | 0.431 | 0.434 |
Mental health | −0.069 | −0.220 | −0.221 | 0.384 | 0.490 | 0.486 |
Calculating PCS-12 and MCS-12 component summary scores
SF-12 answer category | Oblique rotation method | Orthogonal rotation method | ||
---|---|---|---|---|
PCS-12 | MCS-12 | PCS-12_uc | MCS-12_uc | |
Physical functioning
| ||||
PFQ2_A1 | −4.719 | 0.879 | −6.148 | 3.072 |
PFQ2_A2 | −2.352 | 0.306 | −2.987 | 1.334 |
PFQ4_A1 | −6.461 | 0.459 | −7.757 | 3.016 |
PFQ4_A2 | −2.755 | 0.142 | −3.346 | 1.338 |
Physical role
| ||||
rpQ2_A1 | −2.858 | −0.863 | −3.041 | 0.070 |
rpQ3_A1 | −3.911 | −1.035 | −4.246 | 0.407 |
Emotional role
| ||||
REQ2_A1 | 0.594 | −5.599 | 3.016 | −6.910 |
REQ3_A1 | 0.760 | −6.043 | 3.336 | −7.438 |
Bodily pain
| ||||
BPQ2_A1 | −12.066 | 0.371 | −14.346 | 4.565 |
BPQ2_A2 | −10.585 | 1.787 | −12.952 | 5.433 |
BPQ2_A3 | −7.174 | 1.432 | −8.835 | 3.850 |
BPQ2_A4 | −3.998 | 0.558 | −4.926 | 2.083 |
General health
| ||||
GHQ1_A1 | −9.956 | −2.736 | −10.904 | 0.756 |
GHQ1_A2 | −6.679 | −0.868 | −7.642 | 1.556 |
GHQ1_A3 | −3.447 | −0.318 | −3.982 | 0.928 |
GHQ1_A4 | −1.665 | −0.126 | −1.958 | 0.508 |
Vitality
| ||||
VTQ2_A1 | −1.895 | −6.232 | 0.307 | −6.640 |
VTQ2_A2 | −2.652 | −6.333 | −0.657 | −6.441 |
VTQ2_A3 | −1.907 | −4.611 | −0.420 | −4.775 |
VTQ2_A4 | −1.238 | −3.303 | −0.168 | −3.407 |
VTQ2_A5 | −0.755 | −1.645 | −0.208 | −1.705 |
Mental health
| ||||
MHQ3_A1 | 0.341 | −7.603 | 2.966 | −8.817 |
MHQ3_A2 | 0.711 | −9.250 | 4.149 | −10.865 |
MHQ3_A3 | 0.189 | −7.191 | 2.801 | −8.272 |
MHQ3_A4 | 0.075 | −4.234 | 1.598 | −4.858 |
MHQ3_A5 | −0.085 | −2.119 | 0.676 | −2.439 |
MHQ4_A1 | 2.695 | −11.164 | 6.535 | −13.668 |
MHQ4_A2 | 0.525 | −11.018 | 4.526 | −12.763 |
MHQ4_A3 | 0.007 | −8.347 | 2.932 | −9.513 |
MHQ4_A4 | 0.492 | −4.847 | 2.231 | −5.650 |
MHQ4_A5 | 0.119 | −2.325 | 0.920 | −2.632 |
Social functioning
| ||||
SFQ2_A1 | −4.560 | −7.505 | −1.885 | −7.110 |
SFQ2_A2 | −3.387 | −8.255 | −0.464 | −8.331 |
SFQ2_A3 | −2.866 | −4.661 | −1.368 | −4.328 |
SFQ2_A4 | −1.316 | −2.348 | −0.495 | −2.346 |
Statistical analyses
Age (years) | Total group (n = 2,013) | Women (n = 1,019) | Men (n = 992) | |||
---|---|---|---|---|---|---|
MCS-12 | PCS-12 | MCS-12 | PCS-12 | MCS-12 | PCS-12 | |
30–39 |
n = 395 |
n = 395 |
n = 198 |
n = 198 |
n = 197 |
n = 197 |
Mean score | 51.08 | 53.77 | 49.80 | 52.76 | 52.36 | 54.78 |
SD | 9.22 | 6.44 | 9.61 | 6.71 | 8.65 | 6.02 |
95% CI | 50.17–51.99 | 53.13–54.4 | 48.46–51.15 | 51.82–53.70 | 51.14–53.57 | 53.93–55.63 |
40–49 |
n = 421 |
n = 421 |
n = 222 |
n = 222 |
n = 198 |
n = 198 |
Mean score | 51.07 | 53.17 | 49.79 | 51.97 | 52.57 | 54.55 |
SD | 9.09 | 6.99 | 9.58 | 7.48 | 8.25 | 6.13 |
95% CI | 50.20–51.94 | 52.50–53.84 | 48.52–51.06 | 50.98–52.96 | 51.41–53.73 | 53.69–55.41 |
50–59 |
n = 436 |
n = 436 |
n = 216 |
n = 216 |
n = 220 |
n = 220 |
Mean score | 50.89 | 50.71 | 49.48 | 49.58 | 52.27 | 51.83 |
SD | 8.85 | 9.07 | 9.41 | 9.66 | 8.04 | 8.32 |
95% CI | 50.06–51.72 | 49.86–51.57 | 48.22–50.74 | 48.28–50.87 | 51.20–53.34 | 50.72–52.93 |
60–69 |
n = 391 |
n = 391 |
n = 194 |
n = 194 |
n = 197 |
n = 197 |
Mean score | 51.30 | 50.86 | 50.07 | 49.76 | 52.50 | 51.95 |
SD | 8.76 | 8.26 | 8.84 | 8.76 | 8.53 | 7.60 |
95% CI | 50.43–52.17 | 50.04–51.68 | 48.82–51.32 | 48.52–51.00 | 51.31–53.70 | 50.88–53.02 |
70–79 |
n = 370 |
n = 370 |
n = 189 |
n = 189 |
n = 180 |
n = 180 |
Mean score | 47.71 | 44.22 | 46.59 | 42.16 | 48.87 | 46.46 |
SD | 10.52 | 11.69 | 10.43 | 11.96 | 10.55 | 10.99 |
95% CI | 46.63–48.78 | 43.02–45.41 | 45.09–48.09 | 40.44–43.88 | 47.32–50.42 | 44.84–48.07 |
Total group |
n = 2,013 |
n = 2,013 |
n = 1,019 |
n = 1,019 |
n = 992 |
n = 992 |
Mean score | 50.45 | 50.66 | 49.19 | 49.38 | 51.78 | 52.00 |
SD | 9.36 | 9.23 | 9.64 | 9.74 | 8.89 | 8.46 |
95% CI | 50.04–50.87 | 50.26–51.06 | 48.59–49.78 | 48.78–49.98 | 51.22–52.33 | 51.48–52.53 |
Age (years) | Total group (n = 2,013) | Women (n = 1,019) | Men (n = 992) | |||
---|---|---|---|---|---|---|
MCS-12_uc | PCS-12_uc | MCS-12_uc | PCS-12_uc | MCS-12_uc | PCS-12_uc | |
30–39 |
n = 395 |
n = 395 |
n = 198 |
n = 198 |
n = 197 |
n = 197 |
Mean score | 49.78 | 54.06 | 48.67 | 53.37 | 50.89 | 54.76 |
SD | 9.70 | 6.53 | 10.31 | 7.09 | 8.92 | 5.85 |
95% CI | 48.82–50.74 | 53.42–54.71 | 47.22–50.11 | 52.38–54.37 | 49.63–52.14 | 53.93–55.58 |
40–49 |
n = 421 |
n = 421 |
n = 222 |
n = 222 |
n = 198 |
n = 198 |
Mean score | 49.99 | 53.37 | 48.95 | 52.45 | 51.22 | 54.41 |
SD | 9.18 | 6.68 | 9.78 | 7.31 | 8.30 | 5.77 |
95% CI | 49.11–50.87 | 52.73–54.01 | 47.66–50.24 | 51.48–53.41 | 50.05–52.38 | 53.60–55.22 |
50–59 |
n = 436 |
n = 436 |
n = 216 |
n = 216 |
n = 220 |
n = 220 |
Mean score | 50.72 | 50.51 | 49.51 | 49.71 | 51.91 | 51.31 |
SD | 9.04 | 9.45 | 9.48 | 9.91 | 8.45 | 8.91 |
95% CI | 49.87–51.57 | 49.63–51.40 | 48.24–50.78 | 48.28–50.87 | 50.78–53.03 | 50.12–52.49 |
60–69 |
n = 391 |
n = 391 |
n = 194 |
n = 194 |
n = 197 |
n = 197 |
Mean score | 51.13 | 50.54 | 50.13 | 49.70 | 52.12 | 51.37 |
SD | 8.73 | 8.24 | 9.02 | 9.06 | 8.35 | 7.28 |
95% CI | 50.26–52.00 | 49.72–51.36 | 48.85–51.40 | 48.42–50.98 | 50.95–53.29 | 50.35–52.39 |
70–79 |
n = 370 |
n = 370 |
n = 189 |
n = 189 |
n = 180 |
n = 180 |
Mean score | 49.50 | 44.06 | 48.99 | 42.06 | 50.01 | 46.26 |
SD | 8.49 | 11.15 | 9.50 | 11.63 | 9.48 | 10.17 |
95% CI | 46.53–50.47 | 42.93–45.20 | 47.62–50.35 | 40.39–43.73 | 48.61–51.40 | 44.76–47.76 |
Total group |
n = 2,013 |
n = 2,013 |
n = 1,019 |
n = 1,019 |
n = 992 |
n = 992 |
Mean score | 50.24 | 50.63 | 49.25 | 49.60 | 51.26 | 51.71 |
SD | 9.24 | 9.21 | 9.63 | 9.88 | 8.71 | 8.30 |
95% CI | 49.83–50.64 | 50.22–51.03 | 48.65–49.84 | 48.99–50.20 | 50.72–51.81 | 51.19–52.23 |
Characteristic | Normative population (n = 2,301) | Post-MI patients (n = 459) |
P-value |
---|---|---|---|
Demographics
| |||
Age, years, mean (SD) | 55.2 (14.3) | 59.5 (11.2) | <.001 |
Male sex | 49.1 (1,128) | 80.0 (367) | <.001 |
No partner | 16.5 (380) | 17.6 (81) | .55 |
Low education | 30.2 (694) | 45.3 (208) | <.001 |
Cardiovascular history
| |||
Cardiovascular disease#
| 12.8 (289) | 100 (459) | <.001 |
Clinical factors
| |||
Diabetes mellitus | 5.6 (126) | 14.2 (65) | <.001 |
Hypercholesterolemia | 1.0 (22) | 34.7 (157) | <.001 |
Hypertension | 9.3 (208) | 38.7 (176) | <.001 |
COPD | 4.8 (110) | 7.8 (36) | <.01 |
Renal failure | 0.4 (9) | 3.5 (16) | <.001 |
Current smoking | 20 (459) | 38.0 (174) | <.001 |
BMI, kg/m², mean (SD) | 25.6 (3.9) | 26.9 (4.0) | <.001 |
Psychological risk factors
| |||
Anxiety disorder | 1.8 (40) | 7.1 (29) | <.001 |
Depressive disorder | 4.0 (89) | 17.1 (70) | <.001 |
Results
Confirmation of the relation between SF-12 and SF-36
Oblique rotation | Orthogonal rotation | |||
---|---|---|---|---|
PCS-12 | MCS-12 | PCS-12_uc | MCS-12_uc | |
Sex | −0.15 | −0.16 | −0.10 | −0.12 |
Categorized age | −0.29 | −0.09 | −0.33 | 0.01 (ns) |
Education* | −0.19 | −0.09 | −0.18 | −0.03 |
Marital status* | −0.13 | −0.13 | −0.10 | −0.09 |