From: Differentiating people who use cannabis heavily through latent class analysis
N (%) | Significance | |||||
---|---|---|---|---|---|---|
Overall 380(100.0%) | Class 1: moderately heavy 83(21.8%) | Class 2: heavy 259(68.2%) | Class 3: very heavy 38 (10%) | |||
(A) Latent class membership by problems | ||||||
Problems last year | ||||||
Health | 39(10.3) | 8(9.6) | 25(9.6) | 6(15.8) | \({\chi }^{2}\)=1.40 p=0.497 | |
Psychological | 108(28.4) | 16(19.3) | 75(29.0) | 17(44.7) | \({\chi }^{2}\)=8.42 p=0.015 | |
At school/university | 72(18.9) | 14(16.9) | 49(18.9) | 9(23.7) | \({\chi }^{2}\)=0.78 p=0.674 | |
Family | 73(19.2) | 15(18.1) | 42(16.2) | 16(42.1) | \({\chi }^{2}\)=14.40 p=0.001 | |
Financial | 116(30.5) | 25(30.1) | 73(28.1) | 18(47.4) | \({\chi }^{2}\)=5.76 p=0.056 | |
Fines | 118(31.1) | 20(24.1) | 80(30.9) | 18(47.4) | \({\chi }^{2}\)=6.60 p=0.037 | |
Cannabis Abuse Screening Test | 10.0(4.4) | 8.0(3.5) | 10.0(4.2) | 13.9(5.1) | F = 26.51 p < 0.0001 | |
CUD (CAST ≥ 9) | 225(59.2) | 36(43.4) | 155(60.0) | 34(89.5) | \({\chi }^{2}\)=23.99 p<0.0001 | |
Dependence (CAST ≥ 12) | 139(36.6) | 18(21.7) | 95(36.7) | 26(68.4) | \({\chi }^{2}\)=24.54 p<0.0001 | |
(B) Latent class membership by concurrent use of other substances | ||||||
Tobacco (last month) | 271(71.3) | 52(62.7) | 186(71.8) | 33(86.8) | \({\chi }^{2}\)=7.56 p=0.023 | |
Alcohol (last month) | 327(86.5) | 72(87.8) | 227(87.9) | 28(73.7) | \({\chi }^{2}\)=5.95 p=0.051 | |
Inhalants (last year) | 38(10.0) | 2(2.4) | 31(12.0) | 5(13.2) | \({\chi }^{2}\)=6.73 p=0.035 | |
Cocaine (last year) | 137(36.1) | 19(23.2) | 98(37.8) | 20(52.6) | \({\chi }^{2}\)=10.78 p=0.005 | |
Amphetamine (last year) | 81(21.4) | 10(12.2) | 60(23.2) | 11(28.9) | \({\chi }^{2}\)=5.90 p=0.052 | |
Ecstasy (last year) | 95(25.1) | 19(23.2) | 64(24.7) | 12(31.6) | \({\chi }^{2}\)=1.03 p=0.597 | |
LSD (last year) | 37(9.8) | 3(3.7) | 27(10.4) | 7(18.4) | \({\chi }^{2}\)=6.83 p=0.033 | |
Sedative-hypnotics (last year) | 70(18.5) | 17(20.7) | 49(18.9) | 4(10.5) | \({\chi }^{2}\)=1.90 p=0.386 | |
Synthetic cannabinoids (last year) | 14(3.7) | 1(1.2) | 9(3.5) | 4(10.5) | \({\chi }^{2}\)=6.43 p=0.040 | |
Mushrooms (last year) | 48(12.7) | 8(9.8) | 37(14.3) | 3(7.8) | \({\chi }^{2}\)=2.02 p=0.363 | |
Use of ≥ 1 non-cannabis illicit drug (past year) | 209(55.1) | 37(45.1) | 149(57.5) | 23(60.5) | \({\chi }^{2}\)=4.37 p=0.112 |