Multivariate association of a high level of support for non-smoking venues (at least 4) with period (1992–93, 1995–96, 1998–99), region (California versus the rest of the USA), and the demographic and other variables
| Variable | Adjusted* odds ratio | 95% confidence interval |
|---|---|---|
| Adjusted odds ratio is the odds ratio adjusted for all the other variables in the table. | ||
| Period | ||
| 1992–93 | 1.00 | |
| 1995–96 | 1.11 | (1.08 to 1.15) |
| 1998–99 | 1.26 | (1.22 to 1.31) |
| Region | ||
| USA minus California | 1.00 | |
| California | 1.50 | (1.42 to 1.58) |
| Interaction (region × period) | ||
| Otherwise | 1.00 | |
| California in 1998–99 | 1.49 | (1.34 to 1.66) |
| Sex | ||
| Male | 1.0 | |
| Female | 1.28 | (1.25 to 1.31) |
| Age (years) | ||
| 45+ | 1.00 | |
| 31–44 | 0.82 | (0.80 to 0.84) |
| 18–30 | 0.72 | (0.69 to 0.74) |
| Education | ||
| College graduate | 1.00 | |
| Some college | 0.97 | (0.94 to 0.99) |
| High school or less | 0.90 | (0.88 to 0.93) |
| Race/ethnicity | ||
| Non-Hispanic white | 1.00 | |
| Asian/Pacific Islander | 1.22 | (1.15 to 1.31) |
| Hispanic | 1.48 | (1.40 to 1.56) |
| African American | 1.05 | (1.01 to 1.09) |
| Other | 1.09 | (0.95 to 1.24) |
| Smoke-free workplace | ||
| No, or not an indoor worker | 1.00 | |
| Yes | 1.57 | (1.54 to 1.60) |
| Smoke-free home | ||
| No | 1.00 | |
| Yes | 3.29 | (3.22 to 3.34) |
| Smoking status | ||
| Never | 1.00 | |
| Former | 0.73 | (0.71 to 0.75) |
| Current | 0.35 | (0.34 to 0.36) |