Table S1

Confirmatory factorial analysis for the YFAS: Standardized coefficients and item analysis

Question criteria met
n (%) / One-factor model (22 items) / One-factor model (21 items)
Coeff. / SE / CR / Coeff. / SE / CR / Corrected ITC / KR-20 alpha
if deleted
YFAS 1 / 62 (13.3) / .76*** / 0.05 / 15.28 / .76*** / 0.05 / 15.25 / .52 / .81
YFAS 2 / 42 (9.0) / .69*** / 0.07 / 10.34 / .69*** / 0.07 / 10.28 / .43 / .81
YFAS 3 / 17 (3.6) / .74*** / 0.10 / 7.57 / .73*** / 0.10 / 7.58 / .36 / .82
YFAS 4 / 71 (15.3) / .34*** / 0.09 / 3.85 / .34*** / 0.09 / 3.90 / .20 / .82
YFAS 5 / 58 (12.5) / .77*** / 0.05 / 15.83 / .76*** / 0.05 / 15.81 / .53 / .81
YFAS 6 / 56 (12.1) / .57*** / 0.07 / 7.95 / .57*** / 0.07 / 7.92 / .34 / .82
YFAS 7 / 34 (7.3) / .63*** / 0.08 / 8.18 / .63*** / 0.08 / 8.14 / .35 / .82
YFAS 8 / 28 (6.0) / .79*** / 0.06 / 13.84 / .79*** / 0.06 / 13.88 / .45 / .81
YFAS 9 / 22 (4.7) / .83*** / 0.06 / 14.67 / .83*** / 0.06 / 14.75 / .48 / .81
YFAS 10 / 28 (6.0) / .87*** / 0.05 / 19.46 / .87*** / 0.05 / 19.50 / .36 / .82
YFAS 11 / 21 (4.5) / .85*** / 0.06 / 15.18 / .85*** / 0.06 / 15.23 / .29 / .82
YFAS 12 / 27 (5.8) / .96*** / 0.03 / 31.57 / .96*** / 0.03 / 31.62 / .60 / .81
YFAS 13 / 38 (8.2) / .89*** / 0.04 / 25.25 / .89*** / 0.04 / 25.28 / .59 / .81
YFAS 14 / 53 (11.4) / .84*** / 0.04 / 22.38 / .84*** / 0.04 / 22.39 / .57 / .81
YFAS 15 / 50 (10.8) / .85*** / 0.04 / 23.39 / .85*** / 0.04 / 23.49 / .58 / .81
YFAS 16 / 47 (10.1) / .80*** / 0.05 / 17.53 / .80*** / 0.05 / 17.63 / .51 / .81
YFAS 19 / 148 (31.6) / .51*** / 0.06 / 8.32 / .51*** / 0.06 / 8.27 / .33 / .82
YFAS 20 / 77 (16.5) / .57*** / 0.07 / 8.52 / .57*** / 0.07 / 8.53 / .35 / .82
YFAS 21 / 122 (26.3) / .45*** / 0.07 / 6.61 / .45*** / 0.07 / 6.59 / .29 / .82
YFAS 22 / 324 (69.5) / .51*** / 0.06 / 8.24 / .52*** / 0.06 / 8.38 / .27 / .82
YFAS 24 / 203 (43.7) / .12 / 0.07 / 1.62 / ___ / ___ / ___ / ___ / ___
YFAS 25 / 154 (33.1) / .40*** / 0.07 / 5.82 / .40*** / 0.07 / 5.88 / .26 / .83

Note. CR - Critical Ratio; SE –Standard Error; ITC – item-total correlation; items #17, #18 and #23 were notincluded because they are primers for other questions.

***p < .001

Table S2

Endorsement rates for P-YFAS symptoms

Non-clinical (n = 278) / Clinical (n = 190)
Did Not Meet Symptom
n (%) / Met
Symptom
n (%) / Did Not Meet Symptom
n (%) / Met
Symptom
n (%)
Consumed more than planned
Unable to cut down or stop
Great deal of time spent
Important activities given up
Use despite consequences
Tolerance
Withdrawal
Impairment or distress / 240 (86.3)
116 (41.7)
226 (81.3)
254 (91.4)
213 (76.6)
203 (73.0)
262 (94.2)
263 (94.6) / 38 (13.7)
162 (58.3)
52 (18.7)
24 (8.6)
65 (23.4)
75 (27.0)
16 (5.8)
15 (5.4) / 143 (76.1)
10 (5.3)
128 (69.2)
157 (84.0)
104 (55.6)
108 (57.8)
133 (71.5)
132 (70.6) / 45 (23.9)
178 (94.7)
57 (30.8)
30 (16.0)
83 (44.4)
79 (42.2)
53 (28.5)
55 (29.4)