Table 1: Effects of age, sex, location of residence and socioeconomic status on the incidence of benzodiazepine and Z-drug (zopiclone and zaleplon) use in Manitoba, 1996–2012

Variable	Drug use; relative rate*
Variable	Benzodiazepines and Z-drugs overall	Benzodiazepines alone	Z-drugs alone
Users per 1000 population
1996/97	30.2	26.3	3.9
2011/12	32.4	22.5	9.9
Change in annual rate	1.00	0.99†	1.06†
Age
18–64 v. ≥ 65	0.65†	0.70†	0.56†
0–17 v. ≥ 65	0.06†	0.07†	0.02†
Sex, male v. female	0.70†	0.69†	0.72†
Location, rural v. urban	1.07	0.91	0.93
Socioeconomic status
High v. low	0.97	0.93	1.10†
Not found‡ v. low	1.21†	1.32†	0.85

*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.