score_ctq: Score the Childhood Trauma Questionnaire - CTQ scale...

In PennStateDEPENdLab/dependlab: Useful functions for the UNC Chapel Hill DEPENd Lab (Director: Michael Hallquist)

Score the Childhood Trauma Questionnaire – CTQ scale (Bernstein & Fink, 1998)

Description

Score the Childhood Trauma Questionnaire – CTQ scale (Bernstein & Fink, 1998)

Usage

score_ctq(
  df,
  item_prefix = "CTQ_",
  max_impute = 0.2,
  drop_items = FALSE,
  keep_reverse_codes = FALSE,
  min_value = 1,
  max_value = 5,
  bad_items = NULL,
  add_alphas = TRUE
)

Arguments

df	a data.frame containing the 28 CTQ items to be scored
item_prefix	a character prefix of the items names in df to be scored. Default: "CTQ"
max_impute	the proportion of missingness [0..1) or number [1..n] of missing values per scale. Below this threshold, the person subscale mean will be imputed for missing items.
drop_items	whether to remove the item-level data from the df. Default: FALSE
keep_reverse_codes	whether to retain the reverse coded items (suffix "r")
min_value	the minimum value for the item anchors, used in reverse scoring. Default: 1
max_value	the highest value for the item anchors, used in reverse scoring. Default: 5
bad_items	numeric value or vector of the items that need to be dropped before imputation or calculation of subscales
add_alphas	whether to compute coefficient alpha for subscales and return a column attribute. Default: TRUE

Details

Adds six columns, CTQ_emo_abuse, CTQ_phys_abuse, CTQ_sex_abuse, CTQ_emo_neglect, CTQ_phys_neglect, and CTQ_denial, to df containing the different subscales, respectively.

Note: the default CTQ scoring uses the sum of the items for the scales.

Note: the code assumes that pasting together the item_prefix and the numbers 1:28 will yield the 28 items from the test.

Author(s)

Michael Hallquist, Zach Vig

PennStateDEPENdLab/dependlab documentation built on Sept. 26, 2024, 8:40 p.m.