. Author manuscript; available in PMC: 2024 May 1.

Published in final edited form as: Am J Perinatol. 2022 Nov 8;40(7):704–710. doi: 10.1055/a-1974-4449

Table 3.

Positive predictive value of different screening approaches to identify severe maternal morbidity in twin gestations

Screening approach	Screen positives identified (n)	Gold standard definition		Positive predictive value (%)	True positive cases missed with screening approach
Screening approach	Screen positives identified (n)	True positives	False positives	Positive predictive value (%)	True positive cases missed with screening approach
CDC, ICU, or LOS	165	56	109	34	0
CDC	149	48	101	32	8
CDC minus blood transfusion	44	39	5	87	17

Abbreviations: CDC, Centers for Disease Control and Prevention; ICU, intensive care unit; LOS, length of stay.