b Covariables were those included in model 1, as well as questionnaire period, prepregnancy alcohol intake 0, 1 6, or 7 g day , prepregnancy smoking status never, past, or current , prepregnancy vigorous physical activity metabolic equivalents of task hours day in quintiles , family history of diabetes, race ethnicity Caucasian, African American, Asian American, Hispanic, or other , and marital status.
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