afdx (version 1.1.1)

logitexp: Exponential logit model for two variables

Description

Fit a logit model of v.density on v.fever v.density with a exponential coefficient for the v.density

Usage

logitexp(v.fever, v.density)

Arguments

v.fever

numeric vector of 0/1 indicating fever or equivalent

v.density

numeric vector of values >= 0 indicating the density

Value

S3 object of class afmodel with 4 components: data, model, coefficients and the estimated attributable fraction.

Details

logit(v.fever) ~ beta * (v. density ^ tau)

This corresponds to the model 3 describe by Smith, T., Schellenberg, J.A., Hayes, R., 1994. Attributable fraction estimates and case definitions for malaria in endemic areas. Stat Med 13, 2345<U+2013>2358.

See Also

senspec

Examples

# NOT RUN {
{
# Get the sample data
head(malaria_df1)
fit <- logitexp(malaria_df1$fever, malaria_df1$density)
fit
senspec(fit,  c(1,100,500,1000,2000,4000,8000,16000, 32000,54000,100000))
}
# }