Table 3.
Rates of Severe Maternal Morbidity (SMM) per 10,000 Birth at the Birth Hospitalization by Race/Ethnicity Among Kaiser Permanente Southern California Members, 2008–2017
| Race/Ethnicity | SMM Rate per 10,000 Births |
Unadjusted | Adjusted | |||
|---|---|---|---|---|---|---|
| No. Births With SMM | No. of Total Births | Rate | 95% CI | |||
|
| ||||||
| Main analysis cohort | ||||||
| Non-Hispanic White | 1,245 | 83,902 | 148 | 140–157 | Reference | Reference |
| Non-Hispanic Black | 657 | 26,080 | 252 | 233–271 | 1.69 (1.54,1.86)‡ | 1.52 (1.37,1.69)‡ |
| Asian/Pacific Islander | 912 | 45,983 | 198 | 186–211 | 1.34 (1.23,1.46)‡ | 1.29 (1.18,1.41)‡ |
| Hispanic | 2,893 | 169,982 | 170 | 164–176 | 1.15 (1.07,1.22)‡ | 1.18 (1.10,1.27)‡ |
| Multiple Race, Other Race, Unknown Race/Ethnicity | 208 | 9,363 | 222 | 192–252 | 1.50 (1.29,1.73)‡ | 1.26 (1.09,1.47)† |
| Sub-analysis cohort* | ||||||
| Non-Hispanic White | 924 | 62,146 | 149 | 139–158 | Reference | Reference |
| Non-Hispanic Black | 511 | 19,207 | 266 | 243–289 | 1.79 (1.60,1.99)‡ | 1.57 (1.40,1.77)‡ |
| Asian/Pacific Islander | 681 | 33,458 | 204 | 188–219 | 1.37 (1.24,1.51)‡ | 1.31 (1.18,1.45)‡ |
| Hispanic | 2,134 | 122,960 | 174 | 166–181 | 1.17 (1.08,1.26)‡ | 1.21 (1.11,1.32)‡ |
| Multiple, Other, Unknown | 158 | 6,723 | 235 | 199–271 | 1.58 (1.34,1.87)‡ | 1.29 (1.09,1.54)† |
*
Sub-analysis cohort was restricted to the subset of women with health plan membership for at least 6 months before pregnancy.
†
p < .01.
‡
p < .001.