Table 3 Beta coefficients relating age and smoking status to health-related quality of life score (HUI3),† by sex, household population aged 40 or older in 1994/1995, Canada excluding territories

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Table 3
Beta coefficients relating age and smoking status to health-related quality of life score (HUI3),† by sex, household population aged 40 or older in 1994/1995, Canada excluding territories Table summary
This table displays the results of beta coefficients relating age and smoking status to health-related quality of life score (hui3) men and women, calculated using model a (effect of age), model b (effects of smoking status on intercept) and model c (effects of smoking status on rate of change) units of measure (appearing as column headers).
Men Women
Model A (effect of age) Model B (effects of smoking status on intercept) Model A (effect of age) Model B (effects of smoking status on intercept) Model C (effects of smoking status on rate of change)
Baseline (age 57Note ‡)  
Intercept 1.051958Note *** 1.131771Note *** 1.012339Note *** 1.076350Note *** 1.073303Note ***
Smoking status  
Current daily smoker Note ...: not applicable -0.164788Note *** Note ...: not applicable -0.158754Note *** -0.156027Note ***
Former daily smoker  
Years since quitting daily smoking  
4 or fewer Note ...: not applicable -0.190632Note *** Note ...: not applicable -0.189913Note *** -0.171469Note ***
5 to 9 Note ...: not applicable -0.113097Note *** Note ...: not applicable -0.161116Note *** -0.126985Note ***
10 to 19 Note ...: not applicable -0.088771Note *** Note ...: not applicable -0.047525Note * -0.045746Note *
20 or more Note ...: not applicable -0.026894 Note ...: not applicable -0.046070Note ** -0.047191Note **
Never smoked dailyNote § Note ...: not applicable Note ...: not applicable Note ...: not applicable Note ...: not applicable Note ...: not applicable
Rate of change  
Linear -0.009506Note *** -0.010681Note *** -0.005271Note *** -0.006063Note *** -0.005316Note ***
Interaction with:  
Former daily smoker  
Years since quitting daily smoking  
4 or fewer Note ...: not applicable Note ...: not applicable Note ...: not applicable Note ...: not applicable -0.004468Note **
5 to 9 Note ...: not applicable Note ...: not applicable Note ...: not applicable Note ...: not applicable -0.008378Note ***
Quadratic -0.000036 -0.000002 -0.000078 -0.000087 -0.000097
Cubic -0.000015Note *** -0.000017Note *** -0.000018Note *** -0.000018Note *** -0.000018Note ***
-2 log likelihood 29,669.84 29,310.23 38,686.04 38,237.24 38,198.43
... not applicable
† based on arcsine-transformed values
‡ age centred at 57
§ reference category
* significantly different from reference category/zero (for age) (p < 0.05)
** significantly different from reference category/zero (for age) (p < 0.01)
*** significantly different from reference category/zero (for age) (p < 0.001)
Notes: In men, none of the interactions between smoking status and age (linear, quadratic or cubic) were statistically significant. In women, none of the interactions between smoking status and quadratic and cubic age were significant. When “Never smoked daily” was used as the reference category, statistically significant interactions were observed only for those who had quit for 4 or fewer years or 5 to 9 years. A ?nal model was run retaining these interactions and using the combined other smoking status groups as the reference category.
Source: 1994/1995 to 2010/2011 National Population Health Survey, longitudinal sample (square).