Table 1. Comparison of maternal morbidity by insurance coverage.

Number of total births in the United States from 2017 to 2019 paid for by private insurance, Medicaid, Tricare, and self-pay methods, as well as the number of births complicated by all-cause maternal morbidity (MM), severe maternal morbidity (SMM) excluding perineal lacerations, and severe maternal morbidity excluding transfusions (SMM excl. Trans). Shown are risk ratios using private insurance as the comparison group with 95% confidence intervals.

		MM		SMM		SMM Excl. Trans
Insurance	Births	N (%)	RR (95% CI)	N (%)	RR (95% CI)	N (%)	RR (95% CI)
Private	3,204,190	54,490 (1.70)	Control	19,984 (0.62)	Control	7,461 (0.23)	Control
Medicaid	2,767,308	34,053 (1.23)	0.83 (0.82 – 0.84)	21,160 (0.76)	1.11 (1.10 – 1.12)	7,965 (0.29)	1.12 (1.10 – 1.13)
Tricare	123,206	1,592 (1.29)	0.76 (0.73 – 0.80)	715 (0.58)	0.93 (0.87 – 1.00)	274 (0.22)	0.96 (0.85 – 1.08)
Self-Pay	169,525	2,398 (1.41)	0.84 (0.80 – 0.87)	1,276 (0.75)	1.20 (1.13 – 1.26)	541 (0.32)	1.35 (1.24 – 1.46)