tab: Create Summary Tables for Statistical Reports

#' Sample Dataset for \pkg{tab} Package
#'
#' Data frame with 15 variables, used to illustrate certain functions.
#'
#' @name tabdata
#' @docType data
#' @source
#' Simulated data in R
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#'
#'
#' Sample Survey Dataset for \pkg{tab} Package
#'
#' Data frame with with 9 variables, used to illustrate certain functions. Data
#' are derived from the National Health and Nutrition Examination Survey, years
#' 2003-2004, although the variables 'time' and 'event' are simulated (fake).
#'
#' @name tabsvydata
#' @docType data
#' @source https://wwwn.cdc.gov/Nchs/Nhanes/2003-2004/DEMO_C.htm
#' @references
#' Centers for Disease Control and Prevention (CDC). National Center for Health
#' Statistics (NCHS). National Health and Nutrition Examination Survey Data.
#' Hyattsville, MD: US Department of Health and Human Services, Centers for
#' Disease Control and Prevention, 2003-2004.
#' https://wwwn.cdc.gov/nchs/nhanes/continuousnhanes/default.aspx?BeginYear=2003.
#' Accessed June 8, 2019.
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