Well Switching in Bangladesh

Data on whether or not households in Bangladesh changed the wells that they were using.

Wells

Format

A data frame with 3020 observations on the following 5 variables.

switch

whether or not the household switched to another well from an unsafe well: no or yes.

arsenic

the level of arsenic contamination in the household's original well, in hundreds of micrograms per liter; all are above 0.5, which was the level identified as “safe”.

distance

in meters to the closest known safe well.

education

in years of the head of the household.

association

whether or not any members of the household participated in any community organizations: no or yes.

Details

The data are for an area of Arahazar upazila, Bangladesh. The researchers labelled each well with its level of arsenic and an indication of whether the well was “safe” or “unsafe.” Those using unsafe wells were encouraged to switch. After several years, it was determined whether each household using an unsafe well had changed its well. These data are used by Gelman and Hill (2007) for a logistic-regression example.

Source

http://www.stat.columbia.edu/~gelman/arm/examples/arsenic/wells.dat.

References

A. Gelman and J. Hill (2007) Data Analysis Using Regression and Multilevel/Hierarchical Models. Cambridge: Cambridge University Press.

Examples

summary(Wells)
#>  switch        arsenic         distance         education      association
#>  no :1283   Min.   :0.510   Min.   :  0.387   Min.   : 0.000   no :1743   
#>  yes:1737   1st Qu.:0.820   1st Qu.: 21.117   1st Qu.: 0.000   yes:1277   
#>             Median :1.300   Median : 36.761   Median : 5.000              
#>             Mean   :1.657   Mean   : 48.332   Mean   : 4.828              
#>             3rd Qu.:2.200   3rd Qu.: 64.041   3rd Qu.: 8.000              
#>             Max.   :9.650   Max.   :339.531   Max.   :17.000