Table III.

Association Between Hispanic Ethnicity and Severe Maternal Morbidity

Ethnicity	Severe Morbid Events (n)	SMM Rate (%)	Unadjusted OR (95% CI)	Model 1* [Adjusted OR (95% CI)]	Model 2† [Adjusted OR (95% CI)]
Non-Hispanic white	1,636	1.48	Reference	Reference	Reference
Hispanic	2,905	2.74	1.87 (1.76–1.99)	1.42 (1.22–1.66)	1.26 (1.18–1.42)
Population subgroup
Puerto Rican	706	2.89	2.25 (2.04–2.47)	1.85 (1.52–2.25)	1.71 (1.44–2.03)
Foreign Mexican	592	3.28	1.87 (1.70–2.05)	1.40 (1.14–1.72)	1.21 (1.03–1.42)
Foreign Dominican	611	2.74	1.98 (1.81–2.16)	1.56 (1.31–1.85)	1.26 (1.10–1.44)

SMM, severe maternal morbidity; OR, odds ratio; CI, confidence interval.

^*Adjusted for patient characteristics and clustering of patients within hospitals.

^†Adjusted for patient characteristics, delivery hospital, and clustering of patients within hospital.