Table 2 Perinatal Outcomes of the RPGEH Prenatal Cohort Participants Compared to Non-Participants in Kaiser Permanente Northern California
Overall Denominator (n = 80,086) | Participants (n = 14,757) | Non-Participants (n = 65,329) | |
|---|---|---|---|
Perinatal Outcome | N (%) | ||
Preeclampsia | |||
None | 71,368 (89.1) | 13,017 (88.2) | 58,315 (89.3) |
Pre-existing hypertension | 2,441 (3.1) | 524 (3.4) | 1,917 (2.9) |
Gestational hypertension | 3,079 (3.8) | 604 (4.1) | 2,475 (3.8) |
Preeclampsia/Eclampsia | 3,198 (4.0) | 612 (4.1) | 2,586 (4.0) |
Glucose Tolerance Status | |||
Normal Screening | 56,461 (70.5) | 10,861 (73.6) | 45,599 (69.8) |
Abnormal Screening | 12,013 (15.0) | 2,125 (14.4) | 9,930 (15.2) |
Gestational Diabetes | 5,366 (6.7) | 959 (6.5) | 4,508 (6.9) |
Preexisting T2DM | 961 (1.2) | 162 (1.1) | 784 (1.2) |
Not Screened | 4,805 (6.4) | 649 (4.4) | 4,508 (6.9) |
Gestational Age | |||
< 37 weeks | 6,063 (7.6) | 1,095 (7.4) | 4,968 (7.6) |
≥ 37 weeks | 74,005 (92.4) | 13,662 (92.6) | 60,343 (92.4) |
Unknown | 18 (<0.1) | 0 (0) | 18 (<0.1) |
Gestational Age | |||
Extreme Preterm (<28 weeks) | 324 (0.4) | 57 (0.4) | 267 (0.4) |
Severe Preterm (28–31 week) | 526 (0.7) | 91 (0.6) | 435 (0.7) |
Moderate Preterm (32–33 weeks) | 698 (0.9) | 116 (0.8) | 582 (0.9) |
Late Preterm (34–36 weeks) | 4,515 (5.6) | 831 (5.6) | 3,684 (5.6) |
≥ 37 weeks | 74,005 (92.4) | 13,662 (92.6) | 60,343 (92.4) |
Unknown | 18 (<0.1) | 0 (0) | 18 (<0.1) |
Gestational weight gain in relation to the IOM weight gain guidelines | |||
Below | 10,456 (13.1) | 1,847 (12.5) | 8,609 (13.2) |
Met | 17,196 (21.5) | 3,115 (21.1) | 14,081 (21.6) |
Exceeded | 48,689 (60.8) | 9,416 (63.8) | 39,273 (60.1) |
Unknown | 3,745 (4.7) | 379 (2.6) | 3,366 (5.2) |
Infant birth weight (grams)a | 3,361 ± 556 | 3,400 ± 565 | 3,350 ± 553 |
AGA | 63,843 (81.4) | 11,771 (81.3) | 52,072 (81.4) |
SGA | 7,436 (9.5) | 1,339 (9.3) | 6,097 (9.5) |
LGA | 6,992 (8.9) | 1,342 (9.3) | 5,650 (8.8) |
Unknown | 135 (0.2) | 17 (0.1) | 118 (0.2) |
Infant birth weight (grams) | |||
Very low birth weight (<1,500) | 605 (0.8) | 106 (0.7) | 499 (0.8) |
Low birth weight (1,500–2,500) | 3,158 (4.0) | 555 (3.8) | 2,603 (4.1) |
Normal birth weight (2,501–3,999) | 65,975 (84.2) | 12,042 (83.2) | 53,933 (84.4) |
Macrosomia (4,000+) | 8,582 (10.9) | 1,757 (12.2) | 6,825 (10.7) |
Unknown | 86 (0.1) | 9 (0.1) | 77 (0.1) |
NICU Stay | |||
Non-NICU | 71,563 (89.4) | 13,092 (88.7) | 58,471 (89.5) |
NICU | 8,393 (10.5) | 1,647 (11.2) | 6,746 (10.3) |
Delivery room death | 112 (0.1) | 17 (0.1) | 95 (0.2) |
Unknown | 18 (<0.1) | 1 (<0.1) | 17 (<0.1) |