Table 2 Descriptive statistics, internal consistency, and factor loading of the Severity of Dependence for Khat (SDS-Khat) scores in polysubstance users
Items of the SDS-Khat scale | Mean ± SD | Cronbach’s alpha If item deleted | Factor loadingsa | Item scores | ||||
|---|---|---|---|---|---|---|---|---|
0 Frequency (%) | 1 Frequency (%) | 2 Frequency (%) | 3 Frequency (%) | Missing value | ||||
SDS-1 | 1.2 ± 0.5 | .55 | .38 | 3(1.7) | 129(72.5) | 45(25.3) | 1(0.6) | 0(0) |
SDS-2 | 1. 2 ± 0.5 | .53 | .43 | 0(0) | 136(76.4) | 40(22.5) | 2(1.1) | 0(0) |
SDS-3 | 1.3 ± 0.6 | .53 | .45 | 2(1.1) | 130(73.0) | 34(19.1) | 11(6.2) | 1(0.6) |
SDS-4 | 1.3 ± 0.5 | .48 | .60 | 2(1.1) | 121(68.0) | 51(28.7) | 4(2.2) | 0(0) |
SDS-5 | 1.2 ± 0.5 | 53 | .49 | 4(2.2) | 133(74.7) | 38(21.3) | 3(1.7) | 0(0) |