|  |   Model 1: Unadjusted GEE |  |   Model 2: Multivariable GEEa |  |
---|---|---|---|---|---|
 | Events/N | RR | 95% CI | RR | 95% CI |
Placental abruptionb | Â | Â | Â | Â | Â |
  Any | 18/1,698 | 1.13 | 0.63, 2.04 | 1.19 | 0.65, 2.15 |
  ≥50th (5.7 × 10-1 g – 132 g) | 11/846 | 1.36 | 0.69, 2.70 | 1.35 | 0.68, 2.67 |
  >0- < 50th (9.6 × 10-5 g – 5.7 × 10-1 g) | 7/852 | 0.90 | 0.41, 1.97 | 0.90 | 0.41, 1.97 |
  0 | 28/3,062 | 1.00 | Referent | 1.00 | Referent |
Preeclampsiab | Â | Â | Â | Â | Â |
  Any | 8/1,721 | 0.35 | 0.16, 0.76 | 0.37 | 0.17, 0.83 |
  ≥50th (5.7 × 10-1 g – 132 g) | 4/859 | 0.34 | 0.12, 0.97 | 0.36 | 0.12, 1.07 |
  >0- < 50th (9.6 × 10-5 g – 5.7 × 10-1 g) | 4/862 | 0.37 | 0.14, 0.99 | 0.39 | 0.14, 1.10 |
  0 | 41/3,115 | 1.00 | Referent | 1.00 | Referent |
SGAc | Â | Â | Â | Â | Â |
  Any | 68/1,034 | 0.97 | 0.69, 1.35 | 1.04 | 0.75, 1.46 |
  ≥50th (5.7 × 10-1 g – 89.2 g) | 38/600 | 0.91 | 0.61, 1.36 | 0.98 | 0.66, 1.45 |
  >0- < 50th (1.2 × 10-4 g – 5.7 × 10-1 g) | 30/434 | 1.05 | 0.68, 1.61 | 1.15 | 0.75, 1.76 |
  0 | 62/968 | 1.00 | Referent | 1.00 | Referent |
Stillbirthb, d | Â | Â | Â | Â | Â |
  Any | 13/1,721 | 1.69 | 0.77, 3.68 | 1.67 | 0.76, 3.67 |
  ≥50th (5.7 × 10-1 g – 132 g) | 9/859 | 2.39 | 1.02, 5.61 | 2.38 | 1.01, 5.59 |
  >0- < 50th (9.6 × 10-5 g – 5.7 × 10-1 g) | 4/862 | 0.99 | 0.31, 3.17 | 0.98 | 0.30, 3.14 |
  0 | 14/3,115 | 1.00 | Referent | 1.00 | Referent |