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Table 1 Definition of covariate variables

From: Contribution of prepregnancy body mass index and gestational weight gain to adverse neonatal outcomes: population attributable fractions for Canada

Variable

Definition

Low-income-cut-off (LICO) [16]

A measure of the income threshold below which a family will likely spend 20 percentage points more than the average family on food, shelter and clothing

Medical condition prior to pregnancy

Yes in response to the question “Prior to your pregnancy, did you develop any medical conditions or health problems that required you to take medication for more than 2 weeks, have special care, or extra tests during pregnancy?”

Medical condition during pregnancy

Yes in response to the question “During your pregnancy, did you develop any new medical conditions or health problems that required you to take medication for more than 2 weeks, have special care, or extra tests?”

Depression prior to pregnancy

Yes in response to the question “Before your pregnancy, had you ever been prescribed anti-depressants or been diagnosed with depression?

Short stature

Height of less than 1.55 metres (5 feet 2 inches)