FIGURE 2. Rates of SMM.
Rate of A, SMM and B, SMM excluding cases with transfusion alone, by race/ethnicity and study period. Poisson generalized estimating equation model included study period, race/ethnicity, the interaction term between study period and race/ethnicity, and all of the maternal sociodemographic and clinical factors listed in Table 4.
adjRR, adjusted relative risk; CI, confidence interval. N, Number of denominator (women with obstetric hemorrhage); SMM, severe maternal morbidity.