The REG is a 10-item Likert-type measure of the ability of self-regulation. Items are rated on a scale of 1 (completely disagree) to 4 (completely agree). A total sum score ranging from 10 to 40 may be calculated.
scoring_reg(data, items = 1:10, keep = TRUE, nvalid = 8, digits = NULL)
A character vector with the REG item names ordered from 1 to 10,
or a numeric vector indicating the column numbers of the REG items in
Logical, whether to keep the single items and whether to return variables containing the number of non-missing items on each scale for each respondent. The default is TRUE.
A numeric value indicating the number of non-missing items required for score calculations. The default is 8.
Integer of length one: value to round to. No rounding by default.
The function returns 2 variables:
nvalid.reg: Number of valid values (MAX=10)
score.reg: Summary Score
Number of items: 10
Item range: 1 to 4
Reverse items: none
Score range: 10 to 40
Minimal clinically important difference: none
Treatment of missing values:
The summary score is calculated as long as at least 8 questions have been answered.
Link to Questionnaire (https://www.usucbs.com/uploads/5/1/3/4/51340265/wssq__weight_self_stigma_.docx)
Schwarzer, Jerusalem 1999 (http://www.psyc.de/skalendoku.pdf)