Table 2 Adjusted associations between risk factors of interest and severe maternal morbidity, California, 2007–2014, n = 3,556,206
Risk factor | Odds ratio (95% CI) for severe maternal morbidity | Population attributable risk percentage (95% CI) for severe maternal morbidity |
|---|---|---|
Advanced maternal age | 1.49 (1.45, 1.52) | 7.5 (6.6, 8.4) |
Pre-pregnancy obesity | 0.99 (0.97, 1.01) | −0.2 (−1.2, 0.8) |
Pre-pregnancy comorbidity | 2.22 (2.16, 2.28) | 7.8 (6.9, 8.6) |
Cesarean delivery | 2.66 (2.61, 2.73) | 37.1 (36.0, 38.0) |