Table 1 Baseline characteristics of the cases and their matched controls
Characteristic | Cases n= 103 | Controls n= 103 | Mean Difference (95% CI*) or P-value | |
|---|---|---|---|---|
Age (mean) years | 57.7 | 57.2 | 0.5 (-3.6; 2.7) | |
Mean age at first pregnancy | 25.6 | 26.1 | -0.5 (-1.0; 1.9) | |
Mean age at diagnosis (SSc**) | 53.0# | NA | NA | |
Body Mass Index during first pregnancy | 22.2 | 22.7 | -0.5 (-1.4; 0.3) | |
Sex of children | Male | 30% (31) | 19.4% (20) | 0.1 |
| Â | Female | 16.5% (17) | 22.3% (23) | 0.4 |
| Â | Both | 47.5% (49) | 57.3% (59) | 0.2 |
Number of pregnancies | Mean | 2.46 | 2.41 | 0.1 (-0.3; 0.2) |
| Â | Primipara | 13.6% (14) | 13.6% (14) | 1.0 |
| Â | Multipara | 86.4% (89) | 86.4% (89) | 1.0 |
Smoking during pregnancy (% yes) | 18% (18.5) | 22% (23) | 0.5 | |