TABLE 1.
Characteristics of study sample
| KPH (n = 26,498) |
KPNW (n = 38,189) |
Total (n = 64,687) |
|
|---|---|---|---|
| Characteristic | Mean (SD) | Mean (SD) | Mean (SD) |
| Maternal age, y | 28.9 (5.9) | 28.7 (5.5) | 28.8 (5.7) |
|
| |||
| Prepregnancy BMI, kg/m2a | 26.4 (6.3) | 26.7 (6.4) | 26.6 (6.4) |
|
| |||
| Birthweight, g | 3332 (538) | 3465 (542) | 3411 (544) |
|
| |||
| GCT, mg/dLb | 119.2 (29.5) | 111.8 (28.5) | 114.8 (29.1) |
|
| |||
| Gestational age at GCT, wk | 27.7 (4.0) | 27.3 (4.0) | 27.5 (4.0) |
|
| |||
| Race, n (%) | |||
|
| |||
| Native Hawaiian | 8650 (32.6) | 35 (0.1) | 8685 (13.4) |
|
| |||
| White | 4435 (16.7) | 31,874 (83.5) | 36,309 (56.1) |
|
| |||
| Japanese | 2672 (10.1) | 120 (0.3) | 2792 (4.3) |
|
| |||
| Filipino | 5571 (21.0) | 254 (0.7) | 5825 (9.0) |
|
| |||
| Chinese | 999 (3.8) | 274 (0.7) | 1273 (2.0) |
|
| |||
| Other Asian/Pacific Islander | 2933 (11.1) | 3209 (8.4) | 6142 (9.5) |
|
| |||
| Black | 262 (1.0) | 1645 (4.3) | 1907 (3.0) |
|
| |||
| American Indian/Alaskan Native | 288 (1.1) | 371 (1.0) | 659 (1.0) |
|
| |||
| Other | 682 (2.6) | 43 (0.1) | 725 (1.1) |
|
| |||
| Unknown | 6 (0.0) | 364 (1.0) | 370 (0.5) |
|
| |||
| Hispanic, n (%) | |||
|
| |||
| No | 22,645 (85.5) | 34,221 (89.6) | 56,866 (87.9) |
|
| |||
| Yes | 3853 (14.5) | 3968 (10.4) | 7821 (12.1) |
|
| |||
| Parity, n (%) | |||
|
| |||
| 0 | 10,422 (39.3) | 13,141 (34.4) | 23,563 (36.4) |
|
| |||
| 1 | 8521 (32.2) | 13,258 (34.7) | 21,779 (33.7) |
|
| |||
| 2 | 4573 (17.3) | 6694 (17.5) | 11,267 (17.4) |
|
| |||
| ≥3 | 2980 (11.3) | 5092 (13.3) | 8072 (12.5) |
|
| |||
| Baby sex, n (%) | |||
|
| |||
| Female | 12,795 (48.3) | 18,692 (49.0) | 31,487 (48.7) |
|
| |||
| Male | 13,703 (51.7) | 19,497 (51.0) | 33,200 (51.3) |
BMI, body mass index; GCT, glucose challenge test; KPH, Kaiser Permanente Hawaii; KPNW, Kaiser Permanente Northwest.
a
Not available prior to electronic medical record—we have BMI for 9655 (KPH) and 27,016 (KPNW) for combined total of 36,671;
b
n = 82 women did not have GCT but had oral glucose tolerance test.