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. 2022 Jul 28;5(7):e2224621. doi: 10.1001/jamanetworkopen.2022.24621

Table. Spearman Rank Correlations Between State-Level Perinatal Indicators, 2017-2019.

Indicator r (95% CI)
Severe maternal morbidity Prepregnancy hypertension Prepregnancy diabetes Prepregnancy obesity Low-risk cesarean delivery Preterm birth Infant mortality Maternal mortalitya
Severe maternal morbidity 1 0.39 (0.12 to 0.61) 0.06 (–0.23 to 0.34) –0.28 (–0.53 to 0.00) 0.36 (0.08 to 0.58) 0.04 (–0.24 to 0.32) –0.07 (–0.35 to 0.22) –0.25 (–0.52 to 0.05)
Prepregnancy hypertension 1 0.57 (0.33 to 0.73) 0.48 (0.23 to 0.68) 0.51 (0.26 to 0.69) 0.68 (0.48 to 0.81) 0.65 (0.45 to 0.79) 0.42 (0.13 to 0.64)
Prepregnancy diabetes 1 0.57 (0.34 to 0.73) 0.01 (–0.27 to 0.29) 0.52 (0.28 to 0.70) 0.50 (0.25 to 0.69) 0.27 (–0.04 to 0.53)
Prepregnancy obesity 1 0.15 (–0.13 to 0.41) 0.56 (0.33 to 0.72) 0.66 (0.48 to 0.79) 0.54 (0.48 to 0.79)
Low-risk cesarean delivery 1 0.49 (0.25 to 0.68) 0.31 (0.04 to 0.54) 0.32 (0.02 to 0.56)
Preterm birth 1 0.82 (0.71 to 0.90) 0.59 (0.35 to 0.75)
Infant mortality 1 0.56 (0.32 to 0.74)
Maternal mortality 1
a

Maternal mortality rates used 5-year data (2016-2020) because of small numbers.