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378 lines
15 KiB
R
Executable File
378 lines
15 KiB
R
Executable File
# ==================================================================== #
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# TITLE #
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# AMR: An R Package for Working with Antimicrobial Resistance Data #
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# #
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# SOURCE #
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# https://github.com/msberends/AMR #
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# #
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# CITE AS #
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# Berends MS, Luz CF, Friedrich AW, Sinha BNM, Albers CJ, Glasner C #
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# (2022). AMR: An R Package for Working with Antimicrobial Resistance #
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# Data. Journal of Statistical Software, 104(3), 1-31. #
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# doi:10.18637/jss.v104.i03 #
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# #
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# Developed at the University of Groningen and the University Medical #
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# Center Groningen in The Netherlands, in collaboration with many #
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# colleagues from around the world, see our website. #
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# #
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# This R package is free software; you can freely use and distribute #
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# it for both personal and commercial purposes under the terms of the #
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# GNU General Public License version 2.0 (GNU GPL-2), as published by #
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# the Free Software Foundation. #
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# We created this package for both routine data analysis and academic #
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# research and it was publicly released in the hope that it will be #
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# useful, but it comes WITHOUT ANY WARRANTY OR LIABILITY. #
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# #
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# Visit our website for the full manual and a complete tutorial about #
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# how to conduct AMR data analysis: https://msberends.github.io/AMR/ #
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# ==================================================================== #
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dots2vars <- function(...) {
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# this function is to give more informative output about
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# variable names in count_* and proportion_* functions
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dots <- substitute(list(...))
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dots <- as.character(dots)[2:length(dots)]
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paste0(dots[dots != "."], collapse = "+")
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}
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sir_calc <- function(...,
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ab_result,
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minimum = 0,
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as_percent = FALSE,
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only_all_tested = FALSE,
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only_count = FALSE) {
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meet_criteria(ab_result, allow_class = c("character", "numeric", "integer"), has_length = c(1, 2, 3))
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meet_criteria(minimum, allow_class = c("numeric", "integer"), has_length = 1, is_positive_or_zero = TRUE, is_finite = TRUE)
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meet_criteria(as_percent, allow_class = "logical", has_length = 1)
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meet_criteria(only_all_tested, allow_class = "logical", has_length = 1)
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meet_criteria(only_count, allow_class = "logical", has_length = 1)
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data_vars <- dots2vars(...)
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dots_df <- switch(1,
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...
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)
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if (is.data.frame(dots_df)) {
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# make sure to remove all other classes like tibbles, data.tables, etc
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dots_df <- as.data.frame(dots_df, stringsAsFactors = FALSE)
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}
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dots <- eval(substitute(alist(...)))
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stop_if(length(dots) == 0, "no variables selected", call = -2)
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stop_if("also_single_tested" %in% names(dots),
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"`also_single_tested` was replaced by `only_all_tested`.\n",
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"Please read Details in the help page (`?proportion`) as this may have a considerable impact on your analysis.",
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call = -2
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)
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ndots <- length(dots)
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if (is.data.frame(dots_df)) {
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# data.frame passed with other columns, like: example_isolates %pm>% proportion_S(AMC, GEN)
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dots <- as.character(dots)
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# remove first element, it's the data.frame
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if (length(dots) == 1) {
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dots <- character(0)
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} else {
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dots <- dots[2:length(dots)]
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}
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if (length(dots) == 0 || all(dots == "df")) {
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# for complete data.frames, like example_isolates %pm>% select(AMC, GEN) %pm>% proportion_S()
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# and the old sir function, which has "df" as name of the first argument
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x <- dots_df
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} else {
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# get dots that are in column names already, and the ones that will be once evaluated using dots_df or global env
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# this is to support susceptibility(example_isolates, AMC, any_of(some_vector_with_AB_names))
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dots <- c(
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dots[dots %in% colnames(dots_df)],
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eval(parse(text = dots[!dots %in% colnames(dots_df)]), envir = dots_df, enclos = globalenv())
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)
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dots_not_exist <- dots[!dots %in% colnames(dots_df)]
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stop_if(length(dots_not_exist) > 0, "column(s) not found: ", vector_and(dots_not_exist, quotes = TRUE), call = -2)
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x <- dots_df[, dots, drop = FALSE]
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}
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} else if (ndots == 1) {
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# only 1 variable passed (can also be data.frame), like: proportion_S(example_isolates$AMC) and example_isolates$AMC %pm>% proportion_S()
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x <- dots_df
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} else {
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# multiple variables passed without pipe, like: proportion_S(example_isolates$AMC, example_isolates$GEN)
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x <- NULL
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try(x <- as.data.frame(dots, stringsAsFactors = FALSE), silent = TRUE)
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if (is.null(x)) {
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# support for example_isolates %pm>% group_by(ward) %pm>% summarise(amox = susceptibility(GEN, AMX))
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x <- as.data.frame(list(...), stringsAsFactors = FALSE)
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}
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}
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if (is.null(x)) {
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warning_("argument is NULL (check if columns exist): returning NA")
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if (as_percent == TRUE) {
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return(NA_character_)
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} else {
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return(NA_real_)
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}
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}
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print_warning <- FALSE
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ab_result <- as.sir(ab_result)
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if (is.data.frame(x)) {
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sir_integrity_check <- character(0)
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for (i in seq_len(ncol(x))) {
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# check integrity of columns: force 'sir' class
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if (!is.sir(x[, i, drop = TRUE])) {
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sir_integrity_check <- c(sir_integrity_check, as.character(x[, i, drop = TRUE]))
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x[, i] <- suppressWarnings(as.sir(x[, i, drop = TRUE])) # warning will be given later
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print_warning <- TRUE
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}
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}
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if (length(sir_integrity_check) > 0) {
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# this will give a warning for invalid results, of all input columns (so only 1 warning)
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sir_integrity_check <- as.sir(sir_integrity_check)
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}
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x_transposed <- as.list(as.data.frame(t(x), stringsAsFactors = FALSE))
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if (isTRUE(only_all_tested)) {
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# no NAs in any column
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y <- apply(
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X = as.data.frame(lapply(x, as.integer), stringsAsFactors = FALSE),
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MARGIN = 1,
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FUN = min
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)
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numerator <- sum(as.integer(y) %in% as.integer(ab_result), na.rm = TRUE)
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denominator <- sum(vapply(FUN.VALUE = logical(1), x_transposed, function(y) !(anyNA(y))))
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} else {
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# may contain NAs in any column
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other_values <- setdiff(c(NA, levels(ab_result)), ab_result)
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numerator <- sum(vapply(FUN.VALUE = logical(1), x_transposed, function(y) any(y %in% ab_result, na.rm = TRUE)))
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denominator <- sum(vapply(FUN.VALUE = logical(1), x_transposed, function(y) !(all(y %in% other_values) & anyNA(y))))
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}
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} else {
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# x is not a data.frame
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if (!is.sir(x)) {
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x <- as.sir(x)
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print_warning <- TRUE
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}
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numerator <- sum(x %in% ab_result, na.rm = TRUE)
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denominator <- sum(x %in% levels(ab_result), na.rm = TRUE)
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}
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if (print_warning == TRUE) {
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if (message_not_thrown_before("sir_calc")) {
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warning_("Increase speed by transforming to class 'sir' on beforehand:\n",
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" your_data %>% mutate_if(is_sir_eligible, as.sir)",
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call = FALSE
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)
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}
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}
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if (only_count == TRUE) {
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return(numerator)
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}
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if (denominator < minimum) {
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if (data_vars != "") {
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data_vars <- paste(" for", data_vars)
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# also add group name if used in dplyr::group_by()
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cur_group <- import_fn("cur_group", "dplyr", error_on_fail = FALSE)
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if (!is.null(cur_group)) {
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group_df <- tryCatch(cur_group(), error = function(e) data.frame())
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if (NCOL(group_df) > 0) {
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# transform factors to characters
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group <- vapply(FUN.VALUE = character(1), group_df, function(x) {
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if (is.numeric(x)) {
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format(x)
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} else if (is.logical(x)) {
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as.character(x)
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} else {
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paste0('"', x, '"')
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}
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})
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data_vars <- paste0(data_vars, " in group: ", paste0(names(group), " = ", group, collapse = ", "))
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}
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}
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}
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warning_("Introducing NA: ",
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ifelse(denominator == 0, "no", paste("only", denominator)),
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" results available",
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data_vars,
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" (`minimum` = ", minimum, ").",
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call = FALSE
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)
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fraction <- NA_real_
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} else {
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fraction <- numerator / denominator
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fraction[is.nan(fraction)] <- NA_real_
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}
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if (as_percent == TRUE) {
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percentage(fraction, digits = 1)
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} else {
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fraction
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}
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}
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sir_calc_df <- function(type, # "proportion", "count" or "both"
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data,
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translate_ab = "name",
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language = get_AMR_locale(),
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minimum = 30,
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as_percent = FALSE,
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combine_SI = TRUE,
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confidence_level = 0.95) {
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meet_criteria(type, is_in = c("proportion", "count", "both"), has_length = 1)
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meet_criteria(data, allow_class = "data.frame", contains_column_class = "sir")
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meet_criteria(translate_ab, allow_class = c("character", "logical"), has_length = 1, allow_NA = TRUE)
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language <- validate_language(language)
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meet_criteria(minimum, allow_class = c("numeric", "integer"), has_length = 1, is_positive_or_zero = TRUE, is_finite = TRUE)
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meet_criteria(as_percent, allow_class = "logical", has_length = 1)
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meet_criteria(combine_SI, allow_class = "logical", has_length = 1)
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meet_criteria(confidence_level, allow_class = "numeric", has_length = 1)
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translate_ab <- get_translate_ab(translate_ab)
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data.bak <- data
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# select only groups and antibiotics
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if (is_null_or_grouped_tbl(data)) {
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data_has_groups <- TRUE
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groups <- get_group_names(data)
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data <- data[, c(groups, colnames(data)[vapply(FUN.VALUE = logical(1), data, is.sir)]), drop = FALSE]
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} else {
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data_has_groups <- FALSE
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data <- data[, colnames(data)[vapply(FUN.VALUE = logical(1), data, is.sir)], drop = FALSE]
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}
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data <- as.data.frame(data, stringsAsFactors = FALSE)
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if (isTRUE(combine_SI)) {
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for (i in seq_len(ncol(data))) {
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if (is.sir(data[, i, drop = TRUE])) {
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data[, i] <- as.character(data[, i, drop = TRUE])
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data[, i] <- gsub("(I|S)", "SI", data[, i, drop = TRUE])
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}
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}
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}
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sum_it <- function(.data) {
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out <- data.frame(
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antibiotic = character(0),
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interpretation = character(0),
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value = double(0),
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ci_min = double(0),
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ci_max = double(0),
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isolates = integer(0),
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stringsAsFactors = FALSE
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)
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if (data_has_groups) {
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group_values <- unique(.data[, which(colnames(.data) %in% groups), drop = FALSE])
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rownames(group_values) <- NULL
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.data <- .data[, which(!colnames(.data) %in% groups), drop = FALSE]
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}
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for (i in seq_len(ncol(.data))) {
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values <- .data[, i, drop = TRUE]
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if (isTRUE(combine_SI)) {
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values <- factor(values, levels = c("SI", "R"), ordered = TRUE)
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} else {
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values <- factor(values, levels = c("S", "I", "R"), ordered = TRUE)
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}
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col_results <- as.data.frame(as.matrix(table(values)), stringsAsFactors = FALSE)
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col_results$interpretation <- rownames(col_results)
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col_results$isolates <- col_results[, 1, drop = TRUE]
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if (NROW(col_results) > 0 && sum(col_results$isolates, na.rm = TRUE) > 0) {
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if (sum(col_results$isolates, na.rm = TRUE) >= minimum) {
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col_results$value <- col_results$isolates / sum(col_results$isolates, na.rm = TRUE)
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ci <- lapply(
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col_results$isolates,
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function(x) {
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stats::binom.test(
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x = x,
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n = sum(col_results$isolates, na.rm = TRUE),
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conf.level = confidence_level
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)$conf.int
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}
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)
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col_results$ci_min <- vapply(FUN.VALUE = double(1), ci, `[`, 1)
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col_results$ci_max <- vapply(FUN.VALUE = double(1), ci, `[`, 2)
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} else {
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col_results$value <- rep(NA_real_, NROW(col_results))
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# confidence intervals also to NA
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col_results$ci_min <- col_results$value
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col_results$ci_max <- col_results$value
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}
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out_new <- data.frame(
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antibiotic = ifelse(isFALSE(translate_ab),
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colnames(.data)[i],
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ab_property(colnames(.data)[i], property = translate_ab, language = language)
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),
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interpretation = col_results$interpretation,
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value = col_results$value,
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ci_min = col_results$ci_min,
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ci_max = col_results$ci_max,
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isolates = col_results$isolates,
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stringsAsFactors = FALSE
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)
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if (data_has_groups) {
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if (nrow(group_values) < nrow(out_new)) {
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# repeat group_values for the number of rows in out_new
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repeated <- rep(seq_len(nrow(group_values)),
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each = nrow(out_new) / nrow(group_values)
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)
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group_values <- group_values[repeated, , drop = FALSE]
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}
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out_new <- cbind(group_values, out_new)
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}
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out <- rbind2(out, out_new)
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}
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}
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out
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}
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# based on pm_apply_grouped_function
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apply_group <- function(.data, fn, groups, drop = FALSE, ...) {
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grouped <- pm_split_into_groups(.data, groups, drop)
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res <- do.call(rbind2, unname(lapply(grouped, fn, ...)))
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if (any(groups %in% colnames(res))) {
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class(res) <- c("grouped_data", class(res))
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res <- pm_set_groups(res, groups[groups %in% colnames(res)])
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}
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res
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}
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if (data_has_groups) {
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out <- apply_group(data, "sum_it", groups)
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} else {
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out <- sum_it(data)
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}
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# apply factors for right sorting in interpretation
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if (isTRUE(combine_SI)) {
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out$interpretation <- factor(out$interpretation, levels = c("SI", "R"), ordered = TRUE)
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} else {
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# don't use as.sir() here, as it would add the class 'sir' and we would like
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# the same data structure as output, regardless of input
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out$interpretation <- factor(out$interpretation, levels = c("S", "I", "R"), ordered = TRUE)
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}
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if (data_has_groups) {
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# ordering by the groups and two more: "antibiotic" and "interpretation"
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out <- pm_ungroup(out[do.call("order", out[, seq_len(length(groups) + 2), drop = FALSE]), , drop = FALSE])
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} else {
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out <- out[order(out$antibiotic, out$interpretation), , drop = FALSE]
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}
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if (type == "proportion") {
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# remove number of isolates
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out <- subset(out, select = -c(isolates))
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} else if (type == "count") {
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# set value to be number of isolates
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out$value <- out$isolates
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# remove redundant columns
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out <- subset(out, select = -c(ci_min, ci_max, isolates))
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}
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rownames(out) <- NULL
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out <- as_original_data_class(out, class(data.bak)) # will remove tibble groups
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structure(out, class = c("sir_df", "rsi_df", class(out)))
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}
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