Table 1

Sample characteristics, prevalence and correlates of nonprescribed lifetime use of tranquilizers or sedatives among Brazilian adolescents (n = 18,131)
Total (n = 18131) Lifetime use prevalence (n = 1076) Crude OR (95% CI) Adjusted OR* (95% CI) p value
Age (years) wgt% wgt% (95% CI)
13-15 35.6 4.5 (3.9-5.2) 1.00 1.00
16-19 64.4 5.3 (4.8-6.0) 1.18 (0.98-1.41) 1.37 (1.14-1.66) 0.001
Gender
Male 44.7 3.1 (2.6-3.6) 1.00 1.00
Female 55.3 6.6 (6.0-7.3) 2.22 (1.83-2.70) 2.19 (1.75-2.75) <0.001
SES
(lowest) C-E 36.0 3.7 (3.2-4.4) 1.00 1.00
B 35.3 5.8 (5.1-6.6) 1.58 (1.27-1.96) 1.36 (1.06-1.75) 0.015
(highest) A 10.4 9.3 (8.0-10.8) 2.61 (2.07-3.30) 1.77 (1.27-2.48) 0.001
Not reported 18.4 3.6 (2.7-4.7) 0.95 (0.69-1.31) 1.06 (0.76-1.49) 0.734
Type of school
Public 78.6 4.2 (3.7-4.7) 1.00 1.00
Private 21.4 8.1 (7.4-8.9) 2.02 (1.71-2.38) 1.47 (1.17-1.84) 0.001
Use of tranquilizers or sedatives by family members or friends
No 90.1 3.8 (3.4-4.2) 1.00 1.00
Yes 10.0 17.5 (15.3-20.0) 5.43 (4.50-6.54) 4.26 (3.46-5.23) <0.001
Received a prescription of tranquilizers or sedatives
No 90.0 3.6 (3.3-4.1) 1.00 1.00
Yes 2.6 28.8 (23.1-35.1) 10.66 (7.98-14.22) 6.61 (4.87-8.98) <0.001
Do not remember 7.4 13.5 (11.5-15.7) 4.11 (3.28-5.15) 3.58 (2.77-4.63) <0.001
Risk perception of nonprescribed tranquilizers or sedatives use
High 81.3 4.9 (4.4-5.4) 1.00 1.00
Low 7.2 8.4 (6.5-10.8) 1.79 (1.33-2.40) 1.53 (1.09-2.15) 0.015
Do not know 11.5 4.1 (3.1-5.5) 0.84 (0.61-1.16) 1.07 (0.76-1.50) 0.692

* Adjusted by all variables in the table.

Opaleye et al.

Opaleye et al. BMC Public Health 2013 13:499   doi:10.1186/1471-2458-13-499

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