Table 3 Latent class membership by several characteristics
From: Differentiating people who use cannabis heavily through latent class analysis
Mean (SD)/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 characteristics of cannabis use | ||||||
Nº of years used cannabis | 14.2 (9.1) | 12.2 (9.1) | 14.4 (8.9) | 17.5 (9.4) | F = 4.62 p = 0.010 | |
Age of onset | 16.1(3.9) | 16.3(3.7) | 16.1(4.0) | 15.2(3.1) | F = 4.59 p = 0.101 | |
Mode of administration | ||||||
Smoked mixed with tobacco | 351(92.4) | 72(86.7) | 241(93.0) | 38(100.0) | \({\chi }^{2}\)=7.03 p=0.030 | |
Smoked without tobacco | 118(31.0) | 29(34.9) | 79(30.5) | 10(26.3) | \({\chi }^{2}\)=1.02 p=0.600 | |
Vaporized | 63 (16.6) | 12(14.5) | 42(16.2) | 9(23.7) | \({\chi }^{2}\)=1.68 p=0.431 | |
Eaten or drunk | 67(17.6) | 12(14.5) | 46(17.8) | 9(23.7) | \({\chi }^{2}\)=1.54 p=0.464 | |
Setting | ||||||
Home | 349(91.8) | 68(81.9) | 246(95.0) | 35(92.1) | \({\chi }^{2}\)=14.30 p=0.001 | |
Outdoors | 160(42.1) | 24(28.9) | 118(45.6) | 18(47.4) | \({\chi }^{2}\)=7.62 p=0.022 | |
Club | 151(39.7) | 16(19.3) | 111(42.9) | 24(63.2) | \({\chi }^{2}\)=24.27 p<0.0001 | |
Vehicle | 120(31.6) | 18(21.7) | 85(32.8) | 17(44.7) | \({\chi }^{2}\)=6.99 p=0.030 | |
(B) Latent class membership by reasons for use | ||||||
Social | 2.4(0.9) | 2.4(0.9) | 2.3(0.9) | 2.4(1.0) | F = 0.33 p = 0.725 | |
Expansion | 2.4(1.0) | 2.2(1.0) | 2.5(1.0) | 2.2(1.0) | F = 3.07 p = 0.047 | |
Coping | 2.7(0.9) | 2.4(0.9) | 2.7(0.9) | 2.9(1.0) | F = 3.74 p = 0.024 | |
Conformity | 1.3(0.4) | 1.3(0.3) | 1.3(0.5) | 1.2(0.2) | F = 1.26 p = 0.285 | |
Enhancement | 3.8(0.7) | 3.8(0.8) | 3.7(0.7) | 3.9(0.7) | F = 0.77 p = 0.464 | |
Medical | 29(7.6) | 8(9.6) | 18(7.0) | 3(7.9) | \({\chi }^{2}\)=0.65 p=0.723 | |
(C) Latent class membership by sources of supply | ||||||
Purchased | 284(74.7) | 64(77.1) | 193(74.5) | 27(71.0) | \({\chi }^{2}\)=0.53 p=0.759 | |
Obtained for free | 90(23.7) | 28(33.7) | 57(22.0) | 5(13.2) | \({\chi }^{2}\)=7.37 p=0.025 | |
Club | 142(37.4) | 16(19.3) | 103(39.8) | 23(60.5) | \({\chi }^{2}\)=20.95 p<0.0001 | |
Home grown | 34(9.0) | 2(2.4) | 30(11.6) | 2(5.3) | \({\chi }^{2}\)=7.19 p=0.027 | |