Description Usage Arguments Details Value References Examples
The Yale Food Addiction Scale, Version 2.0 (YFAS V2.0) measures addiction-like eating of palatable foods based on the eleven diagnostic criteria for substance use disorder in the fifth revision of the Diagnostic and Statistical Manual of Mental Disorders (DSM-5).
1 | scoring_yfas(data, items = 1:35, keep = TRUE)
|
data |
a |
items |
A character vector with the YFAS 2.0 item names ordered from 1 to 35,
or a numeric vector indicating the column numbers of the YFAS 2.0 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. |
Number of items:
35
Item range:
0 to 7
Reverse items:
none
Score range:
0 to 11 SUD (Substance Use Disorder) criteria
Cut-off-values:
mild
= 2–3 symptoms plus impairment or distress;
moderate
= 4–5 symptoms plus impairment or distress;
severe
= 6 or more symptoms plus impairment or distress
Minimal clinically important difference:
none
Treatment of missing values:
not reported
Based on the dichotomized YFAS items, the function returns 14 variables:
score.yfas.act:
Activity Score (4 items)
score.yfas.amo:
Amount Score (3 items)
score.yfas.att:
Attempts Score (4 items)
score.yfas.con:
Consequences Score (2 items)
score.yfas.cra:
Craving Score (2 items)
score.yfas.obl:
Obligations Score (2 items)
score.yfas.pro:
Problems Score (3 items)
score.yfas.sit:
Situations Score (3 items)
score.yfas.tim:
Time Score (3 items)
score.yfas.tol:
Tolerance Score (2 items)
score.yfas.wit:
Withdrawal Score (5 items)
score.yfas.imp:
Impairment Score (2 items)
score.yfas.sympnum:
Number of Symptoms (MAX = 11)
cutoff.yfas.foodadd:
Food Addiction, categorized
Schulte, Gearhardt 2017 (http://doi.wiley.com/10.1002/erv.2515)
Meule et al. 2017 (https://doi.org/10.1026/0012-1924/a000047)
1 2 3 4 5 6 | ## Not run:
library(dplyr)
items.yfas <- paste0("YFAS_", seq(1, 35, 1))
scoring_yfas(mydata, items = items.yfas)
## End(Not run)
|
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