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Table 4 Bivariate analysis of factors associated with substance use

From: Substance use patterns among university students in Egypt

Variables Total Substance user
N [%]
P value
(Chi-square)
COR [95% CI]
(Epi-info program)
Overall 1138 74 [6.5] - -
Age     
 < 20 550 21 [3.8] ≤ 0.001 1r
 ≥ 20 588 53 [9]   2.5 [1.5-4.2]
Sex     
 Male 650 67 [10.3] ≤ 0.001 7.8 [3.6-17.4]
 Female 488 7 [1.4]   1r
College type     
 Medical 219 12 [5.5] 0.9 1.1 [0.5-2.09]
 Practical 261 28 [10.7] 0.002 2.2 [1.3-3.7]
 Theoretical 658 34 [5.2]   1r
Educational year     
 1st and 2nd year 507 13 [2.6]   1r
 3rd year 259 12 [4.6] 0.1 1.8 [0.8-4.1]
 4th year 266 33 [12.4] ≤ 0.001 5.4 [2.8-10.4]
 5th and 6th year 106 16 [15.1] ≤ 0.001 6.7 [3.1-14.5]
Residence     
 Urban 565 46 [8.1] 0.03 1.7 [1.1-2.8]
 Rural 573 28 [4.9]   1r
Smoking     
 Yes 256 62 [24.2] ≤ 0.001 23.1 [12.2-43.8]
 No 882 12 [1.4]   1r
Medical problem     
 Yes 265 10 [3.8] 0.04 1r
 No 873 64 [7.3]   2.01 [1.02-3.9]
Working during study     
 Yes 152 21 [13.8] ≤ 0.001 2.8 [1.6-4.8]
 No 986 53 [5.4]   1r
Marital status     
 Single 1102 68 [6.2] 0.01 1r
 Married 36 6 [16.7]   3.04 [1.2-7.5]
  1. COR crude odds ratio which was calculated using Epi-info program. Data are expressed as mean ± standard deviation; P value is assessed via Chi-square. P value ≤ 0.05 is considered statistically significant, N number