Outcomes | PCOS(−) Metformin(−) | PCOS(−) Metformin(+)d | PCOS(+) Metformin(−) | PCOS(+) Metformin(+)d | PCOS(−) Metformin(+)d | PCOS(+) Metformin(−) | PCOS(+) Metformin(+)d | PCOS(−) Metformin(+)d | PCOS(+) Metformin(−) | PCOS(+) Metformin(+)d |
---|---|---|---|---|---|---|---|---|---|---|
 | Number (%) | Crude, OR (95% CI) | Adjusted, OR (95% CI)e | |||||||
994,102 | 870 | 21,486 | 347 | Â | Â | Â | Â | Â | Â | |
C-Sectiona | ||||||||||
 Yes | 164,226 (16.57) | 305 (35.3) | 4269 (19.96) | 94 (27.09) | 2.75 (2.38–3.18) | 1.26 (1.21–1.29) | 1.87 (1.48–2.37) | 1.09 (0.93–1.29) | 1.08 (1.04–1.12) | 1.00 (0.77–1.30) |
 No | 826,793 (83.43) | 559 (64.7) | 17,116 (80.04) | 253 (72.91) |  |  |  |  |  |  |
Acute C-Sectionb | ||||||||||
 Yes | 86,627 (52.75) | 155 (50.82) | 2367 (55.45) | 57 (60.64) | 0.93 (0.74–1.16) | 1.11 (1.05–1.19) | 1.38 (0.91–2.08) | 0.88 (0.69–1.13) | 0.97 (0.91–1.04) | 1.14 (0.75–1.74) |
 No | 77,599 (47.25) | 150 (49.18) | 1902 (44.55) | 37 (39.36) |  |  |  |  |  |  |
 | 994,102 | 620 | 21,486 | 326 | Crude, OR (95% CI) | Adjusted, OR (95% CI)1 | ||||
Preeclampsia | ||||||||||
 Yes | 31,927 (3.21) | 51 (8.23) | 1002 (4.66) | 30 (9.2) | 2.70 (2.03–3.59) | 1.47 (1.38–1.58) | 3.05 (2.09–4.44) | 0.71 (0.51–0.97) | 1.09 (1.02–1.17) | 1.13 (0.75–1.71) |
 No | 962,175 (96.79) | 569 (91.77) | 20,484 (95.34) | 296 (90.8) |  |  |  |  |  |  |
Gestational Diabetesc | ||||||||||
 Yes | 8706 (0.88) | 14 (2.26) | 420 (1.95) | 8 (2.45) | 2.61 (1.54–4.44) | 2.26 (2.03–2.51) | 2.85 (1.41–5.74) | 1.15 (0.67–1.96) | 1.71 (1.53–1.91) | 1.32 (0.66–2.67) |
 No | 985,396 (99.12) | 606 (97.74) | 21,066 (98.05) | 318 (97.55) |  |  |  |  |  |  |