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Table 3 Subgroup analysis of the prevalence of khat use among university students based on random effect analysis

From: Epidemiology of khat (Catha edulis) consumption among university students: a meta-analysis

Subgroup Number of studies Type of use Estimates Heterogeneity
Prevalence (%) 95% Confidence interval I2 (%) Q(df) P value
Sex
 Men 12 Current 19.26 14.05–25.82 98.01 553.56(11) P < 0001
 Women 12 Current 6.41 4.12–9.82 91.96 136.78(11) P < 0001
 Men 10 Lifetime 31.47 25.73–37.84 96.95 294.79(9) P < 0001
 Women 10 Lifetime 11.79 7.53–18.01 95.23 188.52(9) P < 0001
Country
 Ethiopia 15 Current 13.59 11.02–16.62 98.88 1243.10(14) P < 0001
 Saudi Arabia 2 Current 18.85 12.31–27.75 98.24 56.82(1) P < 0001
 Yemen 1 Current 13.04 10.26–16.44
 Ethiopia 17 Lifetime 24.82 21.30–28.72 96.43 447.74(16) P < 0001
 Saudi Arabia 2 Lifetime 37.32 15.74–65.48 99.30 141.20(1) P < 0001
 Yemen 2 Lifetime 43.27 25.31–63.19 92.37 13.04(1) P < 0001