Preterm birth < 37 wk gestation |
SCr normal: ≤ 95th percentile (n = 52 837) | 3702 (7.0) | 0.0 (ref.) | 1.00 (ref.) | 1.00 (ref.) |
SCr abnormal: > 95th percentile (n = 2806) | 254 (9.1) | 2.1 (0.96 to 3.10) | 1.28 (1.14 to 1.45) | 1.23 (1.09 to 1.38) |
Provider-initiated preterm birth < 37 wk gestation |
SCr normal: ≤ 95th percentile (n = 52 837) | 2097 (4.0) | 0.0 (ref.) | 1.00 (ref.) | 1.00 (ref.) |
SCr abnormal: > 95th percentile (n = 2806) | 158 (5.6) | 1.7 (0.79 to 2.50) | 1.42 (1.21 to 1.66) | 1.30 (1.11 to 1.52) |
Spontaneous preterm birth < 37 wk gestation |
SCr normal: ≤ 95th percentile (n = 52 837) | 1605 (3.0) | 0.0 (ref.) | 1.00 (ref.) | 1.00 (ref.) |
SCr abnormal: > 95th percentile (n = 2806) | 96 (3.4) | 0.38 (–0.30 to 1.10) | 1.11 (0.90 to 1.36) | 1.12 (0.91 to 1.37) |
Preterm birth < 32 wk gestation |
SCr normal: ≤ 95th percentile (n = 52 837) | 491 (0.93) | 0.0 (ref.) | 1.00 (ref.) | 1.00 (ref.) |
SCr abnormal: > 95th percentile (n = 2806) | 56 (2.0) | 1.1 (0.54 to 1.60) | 2.15 (1.64 to 2.83) | 2.04 (1.54 to 2.69) |
Preterm birth < 37 wk gestation with severe SGA |
SCr normal: ≤ 95th percentile (n = 52 781) | 200 (0.38) | 0.0 (ref.) | 1.00 (ref.) | 1.00 (ref.) |
SCr abnormal: > 95th percentile (n = 2804) | 18 (0.64) | 0.26 (–0.04 to 0.56) | 1.69 (1.05 to 2.74) | 1.52 (0.94 to 2.45) |
Preterm birth < 37 wk gestation with preeclampsia |
SCr normal: ≤ 95th percentile (n = 52 837) | 370 (0.70) | 0.0 (ref.) | 1.00 (ref.) | 1.00 (ref.) |
SCr abnormal: > 95th percentile (n = 2806) | 42 (1.5) | 0.80 (0.34 to 1.30) | 2.14 (1.56 to 2.93) | 1.82 (1.33 to 2.49) |
Stillbirth at ≥ 20 wk gestation |
SCr normal: ≤ 95th percentile (n = 53 115) | 278 (0.52) | 0.0 (ref.) | 1.00 (ref.) | 1.00 (ref.) |
SCr abnormal: > 95th percentile (n = 2831) | 25 (0.88) | 0.36 (0.01 to 0.71) | 1.69 (1.12 to 2.55) | 1.57 (1.04 to 2.37) |