Table 1.
Description of study cohort by race/ethnic groups
| Non-Hispanic white |
Non-Hispanic black |
Hispanic | Asian/Pacific Islander | Multiracial/Other | ||
|---|---|---|---|---|---|---|
| N=30,499 (53.9%) |
N=11,584 (20.5%) | N=10,476 (18.5%) | N=2,696 (4.8%) | N=1,362 (2.4%) | P- value* |
|
| Mean maternal age, years (SD) | 26.4 (5.9) | 22.7 (5.8) | 24.4 (6.1) | 29.2 (5.3) | 25.3 (6.6) | <0.0001 |
| Marital status, n (%) | <0.0001 | |||||
| Married | 22,602 (74.1) | 2,080 (18.0) | 4,459 (42.6) | 2,272 (84.3) | 669 (49.1) | |
| Divorced/widowed | 295 (1.0) | 53 (0.5) | 82 (0.8) | 11 (0.4) | 14 (1.0) | |
| Single | 7,602 (24.9) | 9,451 (81.6) | 5,935 (56.7) | 413 (15.3) | 679 (49.9) | |
| Health insurance, n (%) | <0.0001 | |||||
| Private | 21,222 (69.6) | 3,258 (28.1) | 2,579 (24.6) | 1,648 (61.1) | 373 (27.4) | |
| Public | 5,676 (18.6) | 6,147 (53.1) | 4,640 (44.3) | 328 (12.2) | 402 (29.5) | |
| Self-pay | 221 (0.7) | 199 (1.7) | 164 (1.6) | 46 (1.7) | 33 (2.4) | |
| Other | 3,380 (11.1) | 1,980 (17.1) | 3,093 (29.5) | 674 (25.0) | 554 (40.7) | |
| Mean BMI at admission, kg/m2 (SD) | 29.9 (5.6) | 31.7 (7.0) | 30.3 (5.6) | 27.9 (4.5) | 30.2 (6.1) | <0.0001 |
| Mean prepregnancy BMI, kg/m2 (SD) | 24.1 (5.4) | 26.1 (6.9) | 24.4 (5.2) | 22.0 (4.1) | 24.2 (5.7) | <.0001 |
| Mean gestational age at delivery, weeks (SD) | 38.9 (2.1) | 38.5 (2.9) | 38.8 (2.4) | 38.9 (1.9) | 38.4 (2.9) | <.0001 |
| Gestational diabetes, n (%) | 676 (2.2) | 225 (1.9) | 375 (3.6) | 127 (4.7) | 58 (4.3) | <.0001 |
| Smoking during pregnancy, n (%) | 2,084 (6.8) | 611 (5.3) | 332 (3.2) | 51 (1.9) | 69 (5.1) | <.0001 |
| Mean birth weight, grams (SD) | 3279.6 (560.1) | 3062.8 (642.9) | 3221.1 (597.4) | 3193.3 (511.0) | 3128.5 (656.1) | <.0001 |
Abbreviations: BMI, body mass index; SD, standard deviation
*
The p-values for marital status, health insurance, gestational diabetes, and smoking during pregnancy were obtained from Chi-squared tests. Mean maternal age, BMI at admission, prepregnancy BMI, gestational age at delivery, and birthweight we compared using ANOVA tests.