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. 2012 Sep;30(3):317–330. doi: 10.3329/jhpn.v30i3.12296

Table. 1.

Operational definitions of dependent and independent variables and their measurements

Variable Description Measurement scale
Dependent variables:
Marriage at very young age Whether the women were married before 16 years of age Dichotomous 0=No and 1=Yes
Child marriage Whether the women were married before 18 years of age Dichotomous 0=No and 1=Yes
Age at first birth The age of women at the time of first childbirth Continuous (count data)
Children ever born Number of children born to an ever-married woman Continuous (count data)
Children died Number of children who died to an ever-married woman Continuous (count data)
Used FP before any childbirth Whether a woman used contraceptive method before her first childbirth Dichotomous 0=No and 1=Yes
Childbirth within one year of marriage Whether a woman gave any livebirth within one year of her first marriage Dichotomous 0=No and 1=Yes
Three or more children Whether a woman gave three livebirths during her reproductive period Dichotomous 0=No and 1=Yes
Most recent pregnancy was unwanted or mistimed Whether current pregnancy and the most recent birth, hereafter, and most recent pregnancy were unintended Dichotomous 0=No and 1=Yes
Ever had terminated pregnancy Whether a woman ever terminated pregnancy in her reproductive period Dichotomous 0=No and 1=Yes
Currently using any contraceptive method Respondent who were currently using any contraceptive method Dichotomous 0=No and 1=Yes
Independent variables:
Age at marriage Age at first marriage of women Ordinal 1=Child marriage; and 2=Adult marriage
Current age of women Respondent's current age at the time of survey (i) Continuous and (ii) Ordinal 1=20-<25; 2=25-<30 3=30-<35; 4=35-<40 5=40-<45 and 6=45-49
Year of marriage In which year a woman was married-off Ordinal 1=1967-1974; 2=1975-1979 3=1980-1984; 4=1985-1989 5=1990-1994; 6=1995-1999 and 7=2000-2007
Women's education Educational level of women Ordinal 0=No formal education 1=Primary 2=Secondary or above
Current residence Current place of residence Ordinal 1=Urban and 2=Rural
Region Place of region Ordinal 1=Barisal; 2=Chittagong 3=Dhaka; 4=Khulna 5=Rajshahi; and 6=Sylhet
Religion Religious affiliation Ordinal 1=Muslim and 2=Non-Muslim
Wealth index Luxurious materials available in household Ordinal 1=Poorest; 2=Poorer 3=Middle; 4=Richer 5=Richest