Pre-existing morbidity in 65 227 women; divided in women experiencing consecutive miscarriages and women with live birth and no miscarriages
| No miscarriages N=53 646 | Non-consecutive miscarriage N=10 297 | 2 Consecutive miscarriages N=1083 | ≥3 Consecutive miscarriages N=201 | |
|---|---|---|---|---|
| Pre-existing hypertension (%) | 2182 (4.1) | 512 (5.0) (p<0.01) | 77 (7.1) (p<0.01) | 21 (10.4) (p<0.01) (p=0.10)* |
| Pre-existing type 1 diabetes mellitus (%) | 328 (0.6) | 67 (0.7) (p=0.64) | 11 (1.0) (p=0.21) | 3 (1.5) (p=0.20) (p=0.55)* |
| Pre-existing kidney disease (%) | 936 (1.7) | 167 (1.6) (p=0.38) | 24 (2.2) (p=0.33) | 4 (2.0) (p=0.85) (p=0.84)* |
| Pre-existing diseases of the circulatory system (including cardiac surgery) (%) | 866 (1.6) | 177 (1.7) (p=0.44) | 38 (3.5) (p<0.01) | 10 (5.0) (p<0.01) (p=0.31)* |
p Values refer to comparisons between miscarriage group and no miscarriage group.
*Comparison between two and three or more consecutive miscarriages.