Table 2: Effects of age, sex, location of residence and socioeconomic status on the prevalence of benzodiazepine and Z-drug (zopiclone and zaleplon) use in Manitoba, 1996–2012

Variable	Drug use; relative rate*
Variable	Benzodiazepines and Z-drugs	Benzodiazepines alone	Z-drugs alone
Users per 1000 population
1996/97	72.8	66.7	10.9
2011/12	97.9	72.4	37.0
Change in annual rate	1.02†	1.01	1.08†
Age
18–64 v. ≥ 65	0.50†	0.52†	0.44†
0–17 v. ≥ 65	0.03†	0.03†	0.01†
Sex, male v. female	0.66†	0.65†	0.64†
Location, rural v. urban	0.88†	0.85†	1.04
Socioeconomic status
High v. low	0.91	0.88†	1.02†
Not found‡ v. low	1.53†	1.56†	1.25†

*Unless states otherwise. Relative rates were adjusted for age, socioeconomic status, region and sex. †Significant effect (p < 0.05). ‡Includes people to whom a neighbourhood income could not be assigned, i.e., residents of personal care homes, psychiatric facilities and prisons as well as wards of the public trustee and Child and Family Services.