Adjusted prevalence of exclusive RYO smoking among current smokers from 2004 to 2016, overall, and stratified by demographic subgroup
| 2004 | 2007 | 2010 | 2013 | 2016 | Linear effect of year | ||||||
| Adj. % | 95% CI | Adj. % | 95% CI | Adj. % | 95% CI | Adj. % | 95% CI | Adj. % | 95% CI | OR (95% CI), p values | |
| Weighted n | (5695) | (4299) | (4575) | (3561) | (3407) | ||||||
| All current smokers* | 5.7 | (5.0 to 6.4) | 6.3 | (5.4 to 7.1) | 6.9 | (6.1 to 7.8) | 9.8 | (8.5 to 11.0) | 10.9 | (9.6 to 12.1) | 1.07 (1.05 to 1.08), p<0.001 |
| Stratified analysis | |||||||||||
| Gender† | |||||||||||
| Male | 7.5 | (6.4 to 8.7) | 8.1 | (6.7 to 9.5) | 7.8 | (6.5 to 9.0) | 11.6 | (9.7 to 13.5) | 12.3 | (10.5 to 14.1) | 1.05 (1.03 to 1.07), p<0.001 |
| Female | 3.4 | (2.8 to 4.1) | 4.0 | (3.2 to 4.8) | 5.8 | (4.8 to 6.9) | 7.7 | (6.2 to 9.1) | 9.2 | (7.6 to 10.8) | 1.10 (1.07 to 1.12), p<0.001 |
| Age group‡ | |||||||||||
| 18–29 years | 3.0 | (2.0 to 4.1) | 3.1 | (1.7 to 4.5) | 6.7 | (4.7 to 8.7) | 11.9 | (8.8 to 15.1) | 11.6 | (8.7 to 14.6) | 1.15 (1.11 to 1. 19), p<0.001 |
| 30–59 years | 6.6 | (5.6 to 7.6) | 7.2 | (6.1 to 8.4) | 7.2 | (6.2 to 8.2) | 9.3 | (7.9 to 10.7) | 11.4 | (9.8 to 13.0) | 1.05 (1.03 to 1.07), p<0.001 |
| 60+ years | 7.1 | (5.2 to 9.0) | 8.3 | (6.2 to 10.5) | 6.1 | (4.4 to 7.7) | 7.9 | (5.8 to 10.0) | 8.0 | (6.1 to 9.8) | 1.01 (0.98 to 1.04), p=0.665 |
| SES group§ | |||||||||||
| Low SES | 6.3 | (5.2 to 7.3) | 6.1 | (4.9 to 7.3) | 7.7 | (6.4 to 9.0) | 9.3 | (7.7 to 10.9) | 12.8 | (10.9 to 14.7) | 1.07 (1.05 to 1.09), p<0.001 |
| Mid-SES | 5.5 | (4.3 to 6.6) | 7.0 | (5.5 to 8.5) | 7.1 | (5.8 to 8.4) | 11.1 | (8.8 to 13.3) | 9.2 | (7.4 to 11.0) | 1.06 (1.03 to 1.08), p<0.001 |
| High SES | 4.3 | (2.8 to 5.7) | 4.6 | (2.9 to 6.2) | 4.2 | (2.3 to 6.2) | 8.7 | (5.5 to 11.8) | 8.9 | (5.8 to 12.0) | 1.08 (1.03 to 1.12), p=0.001 |
*Adjusted for gender, age group and SES group.
†Adjusted for age group and SES group.
‡Adjusted for gender and SES group.
§Adjusted for gender and age group.
RYO, roll your own; SES, socioeconomic status.