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aA total of 430 000 women were expected; therefore, 391 (0.09%) without complete 1:10 match (eg, extremes of maternal age or party).
bFor the primary outcome (acute cardiovascular events), an additional 50 women in the exposed group and 350 in the comparison cohort with a history of an acute cardiovascular were excluded for a total of 42 893 in the exposed and 428 051 in the comparison cohorts.
