Table 1.
No severe maternal morbidity (n = 2,612,451) |
Severe maternal morbidity (n = 37,731) |
|||
---|---|---|---|---|
Study variable | Number | % | Number | % |
Prepregnancy body mass index (kg/m2) | ||||
Underweight (<18.5) | 105,771 | 4 | 1,609 | 4 |
Normal weight (18.5–24.9) | 1,290,493 | 49 | 17,810 | 47 |
Overweight (25–29.9) | 674,847 | 26 | 9,692 | 26 |
Obese class 1 (30–34.9) | 328,575 | 13 | 4,899 | 13 |
Obese class 2 (35–39.9) | 134,451 | 5 | 2,218 | 6 |
Obese class 3 (≥40) | 78,315 | 3 | 1,503 | 4 |
Comorbiditya | 429,257 | 6 | 12,047 | 11 |
Cesarean birth | 852,375 | 33 | 22,821 | 60 |
Anemia | 141,511 | 5 | 8,350 | 22 |
Primiparous | 1,041,383 | 40 | 16,655 | 44 |
Height | ||||
<157 cm | 571,438 | 22 | 10,059 | 27 |
≥157 cm | 2,041,013 | 78 | 27,672 | 73 |
Age | ||||
<20 y | 226,173 | 9 | 3,746 | 10 |
20–24 y | 556,216 | 21 | 7,514 | 20 |
25–29 y | 702,321 | 27 | 8,753 | 23 |
30–34 y | 662,638 | 25 | 8,965 | 24 |
35–39 y | 370,464 | 14 | 6,402 | 17 |
≥40 y | 94,639 | 4 | 2,351 | 6 |
Race/ethnicity | ||||
Foreign-born Hispanic/Latina | 725,352 | 28 | 10,079 | 27 |
U.S.-born Hispanic/Latina | 636,203 | 24 | 9,451 | 25 |
Non-Hispanic white | 688,451 | 26 | 8,406 | 22 |
Asian/Pacific Islander | 317,995 | 12 | 4,679 | 12 |
Non-Hispanic black/African American | 131,220 | 5 | 3,328 | 9 |
Other | 113,230 | 4 | 1,788 | 8 |
Educational attainment | ||||
Less than high school completion | 632,468 | 24 | 10,122 | 27 |
High school degree or equivalent | 683,659 | 26 | 9,993 | 26 |
Some college | 628,765 | 24 | 8,944 | 24 |
College degree or higher | 667,559 | 26 | 8,672 | 23 |
Private insurance expected as delivery payment method | 1,241,624 | 48 | 16,628 | 44 |
Previous cesarean delivery | 521,676 | 20 | 13,515 | 36 |
Preterm delivery (<37 weeks’ gestation) | 195,693 | 7 | 8,413 | 22 |
Prenatal care began | ||||
1st trimester | 2,177,686 | 83 | 30,444 | 81 |
2nd trimester | 356,354 | 14 | 5,633 | 15 |
3rd trimester or none | 78,411 | 3 | 1,654 | 4 |
Placenta previa or abruption | 40,990 | 2 | 3,759 | 10 |
Twin/multiple birth | 40,835 | 2 | 2,436 | 6 |
Preexisting or gestational hypertension, preeclampsia, preexisting or gestational diabetes, or asthma.