valid diagnostic entity?
SUPPORTING INFORMATION
Table S1: Diagnostic crosswalk between DSM-IV and DSM-5 diagnostic categories (N=400) DSM-IV abuse DSM-IV dependence No % (n) Yes % (n) No % (n) Yes % (n)
DSM-5 substance use disorder (Kappa = 0.838**) (Kappa = 0.706**) No 23.0 (92) 3.3 (13) 26.3 (105) 0 (0) Yes 3.0 (12) 70.8 (283) 13.3 (53) 60.5 (242) DSM-5 severe substance use disorder (Kappa = 0.592**) (Kappa = 0.867**) No 26.0 (104) 19.5 (78) 39.3 (157) 6.3 (25) Yes 0(0) 54.5 (218) 0.3 (1) 54.3 (217) DSM-5 moderate OR severe disorder (Kappa = 0.719**) (Kappa = 0.899**) No 25.3 (101) 11.5 (46) 35.8 (143) 1.0 (4) Yes 0.8 (3) 62.5 (250) 3.8 (15) 59.5 (238)
* p<.05; ** p<.01; *** p<.001
Table S2: Latent class fit statistics for DSM-5 Khat use disorder symptom items, with 1 to 6 classes (N=400)
Model AIC BIC ssaBIC LMR-
ALRT LMR-ALRT p-value Entropy Percentage in each class
Cl as s 1 Cl as s 2 Cl as s 3 Cl as s 4 Cl as s 5 Cl as s 6 1 class 5862 5906 5871 - - 100 2 class 4386 4477 4404 1531.856 0.001 0.957 61 39 3 class 4227 4366 4255 180.518 <0.001 0.859 32 33 35 4 class 4196 4383 4234 54.167 0.383 0.837 26 19 33 22 5 class 4175 4411 4224 43.254 0.483 0.872 18 14 22 33 14 6 class 4154 4438 4212 44.547 0.274 0.887 14 7 24 18 4 33
Figure S1: Response probabilities according to group for the three-class solution 0.0 0.2 0.4 0.6 0.8 1.0 Maj o r ro le So ci al H azard Crav in g T o le ran ce W it h d raw al L arg er G iv e u p Cu t d o w n T ime s p en t Co n ti n u e R es po n se pr o b ab il it
y High dependent khatconsumers (32%)
Abuse, tolerance and time-spent
comsumers (33%) Low/No dependence consumers (35%)
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