Calculates the pooled t-test and Confidence intervals

Source: R/pool_t_test.R

pool_t_test Calculates the pooled t-test, confidence intervals and p-value.

pool_t_test(object, conf.level = 0.95, dfcom = NULL, statistic = FALSE)

Arguments

object

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

conf.level

conf.level Confidence level of the confidence intervals.

dfcom

Number of completed-data analysis degrees of freedom. Default number is taken from function cindex.

statistic

if TRUE (default) the test statistic and p-value are provided, if FALSE these are not shown.

Value

An object of class mipool from which the following objects can be extracted:

  • Mean diff Difference between means

  • SE standard error

  • t t-value (for confidence interval)

  • low_r lower limit of confidence interval

  • high_r upper limit of confidence interval

  • statistic test statistic

  • pval p-value

See also

with.milist, t_test

Author

Martijn Heymans, 2022

Examples


 imp_dat <- df2milist(lbpmilr, impvar="Impnr")
 res_stats <- with(data=imp_dat,
  expr = t_test(Pain ~ Gender, var_equal=TRUE, paired=FALSE))
 res <- pool_t_test(res_stats)
 res
#>      Mean diff        SE       t  95 CI low 95 CI high
#> [1,]  0.659393 0.4061769 1.97788 -0.1439763   1.462762
#> attr(,"class")
#> [1] "mipool"