No miscarriage | 11448 | 1.00 | |
Miscarriage | 1161 | 1.02 (0.88 to 1.18) | 0.81 |
Week of gestation (of earliest miscarriage)
| | | |
No miscarriage | 11448 | 1.00 | |
<9 weeks | 192 | 1.10 (0.78 to 1.55) | 0.61 |
9–10 weeks | 178 | 0.81 (0.55 to 1.19) | 0.29 |
11–12 weeks | 162 | 0.89 (0.60 to 1.32) | 0.55 |
>12 weeks | 205 | 0.90 (0.63 to 1.27) | 0.55 |
Unknown | 424 | 1.20 (0.96 to 1.51) | 0.12 |
Age at miscarriage
| | | |
No miscarriage | 11448 | 1.00 | |
12–19 years | 17 | 1.34 (0.43 to 4.18) | 0.61 |
20–24 years | 134 | 0.65 (0.38 to 1.09) | 0.10 |
25–29 years | 278 | 0.96 (0.71 to 1.29) | 0.77 |
30+ years | 732 | 1.10 (0.92 to 1.32) | 0.29 |
Number of miscarriages
| | | |
0 | 11448 | 1.00 | |
1 | 1031 | 1.01 (0.86 to 1.18) | 0.91 |
2 | 110 | 1.19 (0.76 to 1.87) | 0.44 |
3+ | 20 | 0.67 (0.20 to 2.32) | 0.53 |
Time since miscarriage
| | | |
No miscarriage | 11448 | 1.00 | |
<1 year | 51 | 1.16 (0.6 to 2.23) | 0.66 |
1–4 years | 253 | 1.21 (0.9 to 1.62) | 0.22 |
5–9 years | 377 | 1.05 (0.82 to 1.35) | 0.70 |
10+ years | 480 | 0.89 (0.71 to 1.12) | 0.33 |
Temporal sequence†‡
| | | |
No miscarriage | 11448 | 1.00 | |
Miscarriage while nulliparous | 207 | 1.08 (0.78 to 1.49) | 0.66 |
Live birth then miscarriage | 537 | 0.79 (0.64 to 0.99) | 0.04 |
Unknown sequence§ | 417 | 1.11 (0.88 to 1.39) | 0.37 |