24 25 In Niger, a double blind randomised controlled trial assessed the impact of 100 mg iron or placebo in the third trimester on iron status of the mother and newborn and on the anthropometric status of the newborn.
Third trimester: The final stretch for baby and mother.
Third trimester pregnant ewes.
Data also only included smoking status in the third trimester.
In subsequent analyses, adjustment was also made for maternal age, socioeconomic index, body weight (prepregnancy weight for first trimester and weight at delivery for third trimester) as continuous variables, and smoking status at registration as a categorical variable.
-Birth head circumference: maternal age, maternal pre-pregnancy weight, maternal height, gestational weight gain, parity, maternal education, smoking during pregnancy, working status in the third trimester, sex of the infant, and season of last menstrual period.
Variables considered in this analysis included maternal age, pre-pregnancy body mass index, third trimester urinary phthalate metabolites, parity, maternal education, marital status, and the infant's gender.
Baseline data self-completed questionnaire, thirdata self-completednancy Background demographic: Age, cohabitation and residency status, years since leaving school and occupation based on Standard Occupational Classification, ONS, 2010.
Maternal education and paternal social class, assessed by questionnaire completed by the mother during the third trimester of pregnancy, were used as indicators of socio-economic status.
Prevalence of self-reported smokers at the third trimester of pregnancy was 18.5%, and another 3.9% misreported their smoking status.
Due to culture and beliefs, women in many settings do not disclose their pregnancy status and most of them wait until the third trimester.
