Fig. 1

Mother-infant linkage algorithm attrition diagram

Panel A: IBM® Marketscan® Commercial Database

Panel B: Optum de-identified Clinformatics® Data Mart Database

Footnote: Candidate mothers: women whose pregnancy episode(s) ended with live birth and occurred during a mother’s observation period; Candidate infants: persons who were 0 years of age at observation period start; Candidate links: mothers-infant pairs who matched on insurance enrollment ID infant’s date-of-birth occurred during a candidate mother’s observation period; Probable links: candidate links where candidate infants date-of-birth occurred within ± 60 days of the candidate mother’s pregnancy episode end date; Inferred links: removal of probable links where multiple mothers associated with one infant