Sociodemographic characteristics of the sample and prevalence ratios (PRs) of sleeping pill use in Brazil, 2013 (n=60 202)
| Variables | Sample (%) | Sleeping pill use (%) | PR* | 95% CI | p Value† |
| Sex | <0.001 | ||||
| Male | 47.1 | 4.5 | 1.00 | – | |
| Female | 52.9 | 10.4 | 2.21 | 1.97 to 2.47 | |
| Age group (years) | <0.001 | ||||
| 18–24 | 15.9 | 2.5 | 1.00 | – | |
| 25–39 | 31.8 | 4.8 | 1.89 | 1.42 to 2.51 | |
| 40–59 | 34.2 | 9.1 | 3.53 | 2.70 to 4.62 | |
| ≥60 | 18.1 | 14.3 | 5.43 | 4.14 to 7.11 | |
| Marital status | 0.104 | ||||
| Single | 42.5 | 5.2 | 1.00 | – | |
| Married | 44.3 | 8.5 | 1.07 | 0.95 to 1.21 | |
| Separated | 6.5 | 10.5 | 1.17 | 0.98 to 1.39 | |
| Widowed | 6.7 | 14.6 | 1.02 | 0.86 to 1.21 | |
| Ethnicity | <0.001 | ||||
| Black | 9.2 | 5.8 | 1.00 | – | |
| Brown/indigenous | 42.4 | 7.4 | 1.36 | 1.11 to 1.66 | |
| White/Asian descent | 48.4 | 8.2 | 1.38 | 1.13 to 1.68 | |
| Level of education | 0.010 | ||||
| Higher education | 14.3 | 7.2 | 1.00 | – | |
| High school education | 36.7 | 5.2 | 0.89 | 0.76 to 1.05 | |
| Primary education | 36.8 | 9.3 | 1.18 | 1.01 to 1.38 | |
| No formal education | 12.2 | 10.7 | 1.14 | 0.95 to 1.36 |
*PR adjusted for sex and age.
†p Values for the Wald test adjusted by sex, age, smoking status, alcohol intake and depressive symptoms.