bang1: Sub-sample from the 1989 Bangladesh Fertility Survey

Description

A subset of data from the 1989 Bangladesh Fertility Survey, consisting of 1934 women across 60 districts.

Usage

bang1

Arguments

Format

A data frame with 1934 observations on the following 11 variables:

woman: Identifying code for each woman (level 1 unit).
district: Identifying code for each district (level 2 unit).
use: Contraceptive use status at time of survey; a factor with levels Not_using and Using.
lc: Number of living children at time of survey; an ordered factor with levels None, One_child, Two_children, Three_plus.
age: Age of woman at time of survey (in years), centred on sample mean of 30 years.
urban: Type of region of residence; a factor with levels Rural and Urban.
educ: Woman's level of education; an ordered factor with levels None, Lower_primary, Upper_primary, Secondary_and_above.
hindu: Woman's religion; a factor with levels Muslim and Hindu.
d_illit: Proportion of women in district who are literate.
d_pray: Proportion of Muslim women in district who pray every day (a measure of religiosity).
cons: A column of ones. If included as an explanatory variable in a regression model (e.g. in MLwiN), its coefficient is the intercept.

Details

The bang1 dataset is one of the sample datasets provided with the multilevel-modelling software package MLwiN (Rasbash et al., 2009), and is a subset of data from the 1989 Bangladesh Fertility Survey (Huq and Cleland, 1990) used by Browne (2012) as an example when fitting logistic models for binary and binomial responses. The full sample was analysed in Amin et al. (1997).

Examples

Run this code


if (FALSE) {

data(bang1, package = "R2MLwiN")

bang1$denomb <- 1

# Change contrasts if wish to avoid warning indicating that, by default,
# specified contrasts for ordered predictors will be ignored by runMLwiN
# (they will be fitted as "contr.treatment" regardless of this setting). To
# enable specified contrasts, set allowcontrast to TRUE (this will be the
# default in future package releases).
my_contrasts <- options("contrasts")$contrasts
options(contrasts = c(unordered = "contr.treatment",
                      ordered = "contr.treatment"))

# As an alternative to changing contrasts, can instead use C() to specify
# contrasts for ordered predictors in formula object, e.g.:

# F1 <- logit(use, denomb) ~ 1 + age + C(lc, "contr.treatment") + urban +
#   (1 + urban | district)

# (mymodel <- runMLwiN(Formula = F1,
#                      D = "Binomial",
#                      estoptions = list(EstM = 1),
#                      data = bang1,
#                      allowcontrast = TRUE))

F1 <- logit(use, denomb) ~ 1 + age + lc + urban + (1 + urban | district)

(mymodel <- runMLwiN(Formula = F1,
                     D = "Binomial",
                     estoptions = list(EstM = 1),
                     data = bang1))

# Change contrasts back to pre-existing:
options(contrasts = my_contrasts)

}

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