Calculates the pooled risk ratio (RR) and related confidence interval.

pool_risk_ratio Calculates the pooled risk ratio and confidence interval.

pool_risk_ratio(object, conf.level = 0.95, dfcom = NULL)

Arguments

object

An object of class 'mistats' ('Multiply Imputed Statistical Analysis').

conf.level

Confidence level of the confidence intervals.

dfcom

Complete data degrees of freedom. Default number is taken from function risk_ratio

Value

The pooled RR and confidence intervals.

See also

with.milist, risk_ratio

Author

Martijn Heymans, 2021

Examples

library(magrittr)
lbpmilr %>%
 df2milist(impvar="Impnr") %>%
   with(expr=risk_ratio(Chronic ~ Radiation)) %>%
     pool_risk_ratio()
#>      pooled RR 95 CI low 95 CI high
#> [1,]  1.912204   1.29973   2.813295
#> attr(,"class")
#> [1] "mipool"

# Same as
imp_dat <- df2milist(lbpmilr, impvar="Impnr")
ra <- with(imp_dat, expr=risk_ratio(Chronic ~ Radiation))
res <- pool_risk_ratio(ra)