Description Usage Arguments Details Value References Examples
The IWQOL is a self-report instrument specifically developed to assess the effect of obesity on quality-of-life. IWQOL-Lite is a short form containing 31 items. Scale scores are obtained by adding item scores, and the total score is obtained by adding scale scores. Higher scores indicate poorer quality of life. (Kolotin et al. 2001)
1 2 3 4 5 6 7 | scoring_iwqoll(
data,
items = 1:31,
keep = TRUE,
nvalid = list(physical = 6, self = 4, sexual = 2, distress = 3, work = 2),
digits = NULL
)
|
data |
a |
items |
A character vector with the IWQOL-Lite item names ordered from 1 to 31,
or a numeric vector indicating the column numbers of the IWQOL-Lite items in |
keep |
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. |
nvalid |
A named list indicating the number of non-missing items required for score calculations. The defaults are:
|
digits |
Integer of length one: value to round to. No rounding by default. |
Number of items:
31
Item range:
1 to 5
Reverse items:
none
Score range:
Physical Function
11 to 55
Self-esteem
7 to 35
Sexual Life
4 to 20
Public Distress
5 to 25
Work
4 to 20
Total Score
31 to 155
Cut-off-values:
none
Minimal clinically important difference:
none
Treatment of missing values:
Number of valid items:
Physical Function
6 of 11
Self-esteem
4 of 7
Sexual Life
2 of 4
Public Distress
3 of 5
Work
2 of 4
Total Score
24 of 31
The function returns 12 variables:
nvalid.iwqol.pf:
Number of valid values of Physical Function scale (MAX=11)
nvalid.iwqol.se:
Number of valid values of Self-esteem scale (MAX=7)
nvalid.iwqol.sl:
Number of valid values of Sexual Life scale (MAX=4)
nvalid.iwqol.pd:
Number of valid values of Public Distress scale (MAX=5)
nvalid.iwqol.wo:
Number of valid values of Work scale (MAX=4)
nvalid.iwqol.ts:
Number of valid values of Total scale (MAX=31)
score.iwqol.pf:
IWQOL Physical Function Score
score.iwqol.se:
IWQOL Self-esteem Score
score.iwqol.sl:
IWQOL Sexual Life Score
score.iwqol.pd:
IWQOL Public Distress Score
score.iwqol.wo:
IWQOL Work Score
score.iwqol.ts:
IWQOL Total Score
Kolotkin et al. 2001 (http://doi.wiley.com/10.1038/oby.2001.13)
Kolotkin et al. 2002 (https://doi.org/10.1023/a:1015081805439)
1 2 3 4 5 6 | ## Not run:
library(dplyr)
items.iwqoll <- paste0("IWQOLL_", seq(1, 31, 1))
scoring_iwqoll(mydata, items = items.iwqoll)
## End(Not run)
|
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