Unadjusted and multivariate parameter estimates from a modified Poisson model estimating the association of sociodemographic characteristics with private drug insurance coverage
| Variable | Prevalence ratio (95% CI) | |
|---|---|---|
| Unadjusted | Adjusted | |
| Annual household income, $ | ||
| 20 000–39 999 | 1.49 (1.36–1.64) | 1.55 (1.41–1.70) |
| 40 000–59 999 | 2.48 (2.26–2.71) | 2.36 (2.16–2.58) |
| 60 000–79 999 | 3.05 (2.79–3.34) | 2.75 (2.52–3.00) |
| ≥ 80 000 | 3.85 (3.53–4.20) | 3.22 (2.95–3.51) |
| < 20 000 | 1 | 1 |
| Sex | ||
| Female | 0.98 (0.96–0.99) | 1.03 (1.01–1.04) |
| Male | 1 | 1 |
| Age, yr | ||
| 18–24 | 0.77 (0.73–0.80) | 0.66 (0.63–0.70) |
| 25–34 | 0.91 (0.88–0.94) | 0.75 (0.71–0.78) |
| 35–44 | 1.02 (0.99–1.06) | 0.81 (0.77–0.84) |
| 45–54 | 1.01 (0.98–1.04) | 0.80 (0.76–0.83) |
| 55–64 | 0.90 (0.87–0.93) | 0.75 (0.72–0.78) |
| 65–74 | 0.43 (0.41–0.44) | 0.40 (0.38–0.43) |
| ≥ 75 | 0.31 (0.29–0.33) | 0.33 (0.31–0.36) |
| 12–17 | 1 | 1 |
| Ethnicity | ||
| Nonwhite (Aboriginal/other visible minority) | 0.88 (0.86–0.91) | 0.90 (0.87–0.93) |
| White | 1 | 1 |
| Education | ||
| Postsecondary certificate diploma/university degree | 1.36 (1.33–1.40) | 1.29 (1.24–1.34) |
| Secondary school graduation, no postsecondary education | 1.14 (1.11–1.18) | 1.19 (1.14–1.24) |
| Less than secondary school graduation | 1 | 1 |
| Province | ||
| British Columbia | 0.97 (0.94–1.00) | 0.99 (0.96–1.01) |
| Alberta | 1.16 (1.14–1.19) | 1.05 (1.03–1.08) |
| Saskatchewan | 1.09 (1.05–1.13) | 1.03 (0.99–1.06) |
| Manitoba | 1.10 (1.06–1.14) | 1.09 (1.05–1.13) |
| Quebec | 0.94 (0.92–0.97) | 0.96 (0.94–0.99) |
| New Brunswick | 1.11 (1.07–1.16) | 1.15 (1.11–1.20) |
| Nova Scotia | 1.07 (1.03–1.11) | 1.09 (1.06–1.13) |
| Prince Edward Island | 1.04 (0.99–1.10) | 1.08 (1.03–1.13) |
| Newfoundland and Labrador | 1.06 (1.01–1.11) | 1.08 (1.04–1.13) |
| Yukon Territory | 0.84 (0.76–0.92) | 0.74 (0.67–0.81) |
| Northwest Territories | 1.06 (0.96–1.17) | 0.82 (0.74–0.91) |
| Nunavut | 1.32 (1.18–1.47) | 0.98 (0.88–1.08) |
| Ontario | 1 | 1 |
| No. of chronic conditions | ||
| 1 | 0.92 (0.91–0.94) | 1.00 (0.98–1.02) |
| ≥ 2 | 0.72 (0.71–0.74) | 0.96 (0.94–0.98) |
| 0 | 1 | 1 |
| Citizenship | ||
| Nonimmigrant (Canadian born) | 1.19 (1.15–1.22) | 1.05 (1.02–1.09) |
| Landed immigrant/nonpermanent resident | 1 | 1 |
Note: CI = confidence interval.