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Table 1 Comparisons of the intervention and comparison groups at baseline

From: Evaluation of the effects of a designated program on illegal drug cessation among adolescents who experiment with drugs

Characteristics Intervention
(n = 43)
Comparison
(n = 41)
t/χ2 p value
Age (years) 17.14 ± 0.91 17.43 ± 0.14 t = 2.11 0.15
Gender    χ2 = 0.34 0.56
 Male 29 (67.44) 31 (75.61)   
 Female 14 (32.56) 10 (24.39)   
Work status of main guardian    χ2 = 0.03 0.86
 Employed 34 (79.07) 34 (82.93)   
 Unemployed 9 (20.93) 7 (17.07)   
Years of education of main guardian    χ2 = 0.86 0.36
  ≤ 9 years 12 (27.91) 7 (17.07)   
 >9 years 31 (72.09) 34 (82.93)   
Household status    χ2 = 0.92 0.34
 Live with both parents 27 (62.79) 30 (75.00)   
 Others 16 (37.21) 10 (25.00)   
Religious belief a    χ2 = 0.31 0.58
 Yes 18 (43.90) 21 (52.50)   
 No 23 (56.10) 19 (47.50)   
Illicit drug use among peers    χ2 = 1.14 0.29
 Yes 29 (67.44) 22 (53.66)   
 No 14 (32.56) 19 (46.34)   
Outcome measures at baselineb    T2 = 8.00
(F = 1.50)
0.20
 Stress management 32.29 ± 5.49 33.02 ± 5.47   
 Refusal skills 26.00 ± 4.32 26.52 ± 4.11   
 Pros of drug use 21.63 ± 10.37 18.82 ± 12.81   
 Cons of drug use 37.67 ± 9.00 36.53 ± 12.17   
 Drug use resistance self-efficacy 31.55 ± 5.51 34.14 ± 4.01   
  1. Data of participants’ characteristics are presented as mean, standard deviation, or number (percent) and were compared by an independent two-sample t-test or the chi-square test with Yates correction
  2. aNot all students provided complete answers
  3. bDifferences of outcome measures between groups at baseline were compared by Hotelling’s T2