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Table 2 Description of analytic sample by predicted substance-using classes (n = 570)

From: Delineating patterns of sexualized substance use and its association with sexual and mental health outcomes among young gay, bisexual and other men who have sex with men in Singapore: a latent class analysis

Variables Substance-Naïve (n = 404) Substance-Novice (n = 143) Chemsex (n = 23) Fisher’s Exact Test
p-value
n/Mean %/SD n/Mean %/SD n/Mean %/SD
Age 21.7 2.18 22.4 2.11 22.3 1.77 0.001
Chinese ethnicity (Ref = Non-Chinese) 336 83.2% 124 86.7% 18 78.3% 0.436
Cisgender male (Ref = Transgender, genderqueer, or others) 365 90.4% 139 97.2% 21 91.3% 0.018
Gay (Ref = Bisexual, queer, or others) 268 66.3% 122 85.3% 18 78.3% < 0.001
Monthly household income ≥ SGD5000 (Ref < SGD5000) 131 32.4% 65 45.5% 7 30.4% 0.019
Ever had sexualized substance use with
 Alcohol 96 76.2% 81 56.6% 13 56.5% < 0.001
 Amyl nitrites (Poppers) 0 0.0% 139 97.2% 22 95.7% < 0.001
 Crystal methamphetamine (Meth) 0 0.0% 5 3.5% 22 95.7% < 0.001
 Gamma-Hydroxybutyrate/Gamma-Butyrolactone (GHB/GBL) 0 0.0% 5 3.5% 22 95.7% < 0.001
 Erectile dysfunction drugs (ED) 0 0.0% 9 6.3% 17 73.9% < 0.001
Ever contemplated suicide 207 51.2% 82 57.3% 19 82.6% 0.007
Unprotected anal sex with casual partners in the last 6 months 51 12.6% 36 25.2% 9 39.1% < 0.001
Tested positive for an STI in the last 6 months 22 5.5% 15 10.5% 2 8.7% 0.083
Depression severity (PHQ-9) 7.9 6.69 7.4 6.60 11.4 8.87 0.030
  1. Abbreviation: SD Standard Deviation, STI Sexually Transmitted Infections, GHB/GBL Gamma-Hydroxybutyrate/Gamma-Butyrolactone, PHQ-9 Patient Health Questionnaire-9