Table 3.
Prevalence ratios (PR) and 95% CI, of smoking among people aged 30–84 included in the National Health Surveys between 2004 and 2018 in relation to survey year, age, gender, education, migration statis and household composition
| Model 1 | Model 2 | Model 3 | Model 4 | Model 5 | Model 6 | ||
| Year | 2004 | 2.25 (2.11–2.40) | 2.07 (1.95–2.21) | 2.08 (1.95–2.21) | 1.85 (1.74–1.98) | 1.88 (1.76–2.00) | 1.84 (1.73–1.97) |
| 2005 | 2.17 (2.01–2.35) | 2.01 (1.86–2.17) | 2.01 (1.86.2.17) | 1.83 (1.69–1.98) | 1.85 (1.71–2.00) | 1.83 (1.69–1.98) | |
| 2006 | 2.02 (1.86–2.18) | 1.87 (1.72–2.02) | 1.87 (1.72–2.02) | 1.70 (1.57–1.84) | 1.71 (1.58–1.85) | 1.68 (1.55–1.82) | |
| 2007 | 2.00 (1.84–2.17) | 1.86 (1.71–2.01) | 1.86 (1.71–2.01) | 1.71 (1.57–1.85) | 1.65 (1.54–1.77) | 1.70 (1.56–1.84) | |
| 2008 | 1.89 (1.76–2.02) | 1.76 (1.64–1.88) | 1.76 (1.64–1.88) | 1.64 (1.53–1.75) | 1.66 (1.55–1.78) | 1.63 (1.52–1.74) | |
| 2009 | 1.87 (1.75–2.01) | 1.75 (1.64–1.89) | 1.76 (1.64-1-88) | 1.65 (1.54–1.77) | 1.62 (1.51–1.73) | 1.63 (1.52–1.75) | |
| 2010 | 1.75 (1.63–1.87) | 1.70 (1.58–1.82) | 1.70 (1.58–1.82) | 1.61 (1.50–1.72) | 1.46 (1.36–1.57) | 1.59 (1.48–1.70) | |
| 2011 | 1.57 (1.46–1.69) | 1.53 (1.43–1.64) | 1.53 (1.43–1.64) | 1.45 (1.35–1.56) | 1.47 (1.37–1.58) | 1.43 (1.33–1.54) | |
| 2012 | 1.56 (1.45–1.68) | 1.53 (1.42–1.64) | 1.53 (1.42–1.64) | 1.47 (1.37–1.57) | 1.45 (1.35–1.56) | 1.44 (1.34–1.55) | |
| 2013 | 1.52 (1.42–1.64) | 1.49 (1.39–1.60) | 1.49 (1.39–1.60) | 1.45 (1.35–1.55) | 1.45 (1.35–1.56) | 1.42 (1.32–1.52) | |
| 2014 | 1.47 (1.36–1.75) | 1.45 (1.35–1.56) | 1.45 (1.35–1.56) | 1.41 (1.31–1.52) | 1.42 (1.32–1.53) | 1.39 (1.30–1.50) | |
| 2015 | 1.42 (1.32–1.53) | 1.40 (1.30–1.51) | 1.40 (1.30–1.51) | 1.37 (1.27–1.47) | 1.38 (1.28–1.48) | 1.35 (1.26–1.46) | |
| 2016 | 1.07 (0.99–1.16) | 1.06 (0.97–1.14) | 1.06 (0.97–1.14) | 1.04 (0.96–1.13) | 1.05 (0.97–1.13) | 1. 03 (0.95–1.11) | |
| 2018 | Reference | Reference | Reference | Reference | Reference | Reference | |
| Age | 30–44 | Reference | Reference | Reference | Reference | Reference | |
| 45–64 | 1.06 (1.03–1.10) | 1.06 (1.03–1.10) | 0.94 (0.91–0.97) | 0.94 (0.91–0.98) | 0.93 (0.90–0.96) | ||
| 65–84 | 0.68 (0.65–0.71) | 0.68 (0.65–0.71) | 0.56 (0.54–0.58) | 0.57 (0.55–0.59) | 0.53 (0.51–0.56) | ||
| Gender | Male | Reference | Reference | Reference | Reference | ||
| Female | 1.00 (0.97–1.02) | 1.02 (0.99–1.05) | 1.02 (0.99–1.05) | 1.01 (0.98–1.04) | |||
| Education | Low | 1.96 (1.88–2.04) | 1.96 (1.88–2.04) | 1.93 (1.86–2.01) | |||
| Middle | 1.42 (1.36–1.48) | 1.43 (1.37–1.49) | 1.42 (1.36–1.49) | ||||
| High | Reference | Reference | Reference | ||||
| Born in Sweden | Native | Reference | Reference | ||||
| Immigrant | 1.39 (1.34–1.45) | 1.39 (1.24–1.44) | |||||
| Living alone | Living alone | 1.53 (1.48–1.58) | |||||
| living with other(s) | Reference | ||||||
| AUC | 0.58 (0.58–0.59) | 0.60 (0.60–0.61) | 0.60 (0.60–0.61) | 0.64 (0.63–0.64) | 0.64 (0.64–0.65) | 0.65 (0.65–0.66) | |
| ΔAUC | – | 0.02 | 0.00 | 0.04 | 0.00 | 0.01 |
Model 7 includes the same variables as model 6 but as a multicategorical variable, the PRs and AUC for model 7 are presented in the table 2. AUC values with 95% CI representing the discriminatory accuracy and ΔAUC values of the models are also presented.
AUC, area under the curve.