Table 6.
Multivariate Poisson regression analyses of EQ-5D-5L disutility scores, EQ-VAS scores and socio-demographic variables
| Variablea | Disutility scores | EQ-VAS scores | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Model 1 | Model 2 | Model 1 | Model 2 | |||||||||
| B b | 95 % CI | p-value | B b | 95 % CI | p-value | B b | 95 % CI | p-value | B b | 95 % CI | p-value | |
| Control variables | ||||||||||||
| Gender (positive) | ||||||||||||
| Malec | ||||||||||||
| Female | 0.18 | −0.06, 0.43 | 0.14 | 0.19 | −0.05, 0.44 | 0.13 | 0.01 | 0.01, 0.02 | <0.01 | 0.02 | 0.01, 0.02 | <0.01 |
| Age category, years (positive) | ||||||||||||
| 15–29c | ||||||||||||
| 30–49 | 0.68 | 0.25, 1.11 | <0.01 | 0.62 | 0.13, 1.10 | 0.01 | −0.06 | −0.07,−0.05 | <0.01 | −0.06 | −0.07,−0.05 | <0.01 |
| 50–69 | 0.98 | 0.58, 1.40 | <0.01 | 0.85 | 0.34, 1.36 | <0.01 | −0.05 | −0.06, −0.03 | <0.01 | −0.05 | −0.06, −0.03 | <0.01 |
| 70+ | 1.28 | 0.84, 1.72 | <0.01 | 1.25 | 0.58, 1.92 | <0.01 | −0.63 | −0.08, −0.05 | <0.01 | −0.10 | −0.02, −0.07 | <0.01 |
| Education attainment (negative) | ||||||||||||
| Up to secondaryc | ||||||||||||
| Trade, apprenticeship, certificate, diploma | −0.05 | −0.32, 0.22 | 0.71 | 0.07 | −0.21, 0.34 | 0.63 | 0.02 | 0.01, 0.03 | <0.01 | 0.01 | 0.00, 0.02 | 0.04 |
| Degree or higher | −0.32 | −0.67, 0.03 | 0.07 | −0.07 | −0.43, 0.30 | 0.72 | 0.07 | 0.06, 0.08 | <0.01 | 0.05 | 0.03, 0.06 | <0.01 |
| Exploratory variables | ||||||||||||
| Annual household income (negative) | ||||||||||||
| Up to $20,000c | ||||||||||||
| $20,001–$60,000 | −0.01 | −0.44, 0.43 | 0.98 | 0.02 | 0.00, 0.05 | 0.02 | ||||||
| $60,001–$100,000 | −0.25 | −0.80, 0.29 | 0.37 | 0.07 | 0.05, 0.09 | <0.01 | ||||||
| $100,001+ | −0.33 | −0.88, 0.22 | 0.24 | 0.04 | 0.01, 0.06 | <0.01 | ||||||
| Not stated | −0.17 | −0.62, 0.29 | 0.48 | 0.02 | 0.00, 0.04 | 0.04 | ||||||
| Employment status (positive) | ||||||||||||
| Full or part time, student, home dutiesc | ||||||||||||
| Unemployed | 0.67 | 0.04, 1.29 | 0.04 | −0.09 | −0.11, −0.07 | <0.01 | ||||||
| Retired | 0.14 | −0.30, 0.58 | 0.54 | 0.03 | 0.02, 0.05 | <0.01 | ||||||
| Otherd | 1.41 | 1.06, 1.77 | <0.01 | −0.31 | −0.33, −0.29 | <0.01 | ||||||
| Marital status (positive) | ||||||||||||
| Married/De Factoc | ||||||||||||
| Never Married | 0.09 | −0.32, 0.50 | 0.68 | −0.22 | −0.04, −0.01 | <0.01 | ||||||
| Separated/Divorced | 0.57 | −0.33, 0.44 | 0.77 | −0.06 | −0.07, −0.04 | <0.01 | ||||||
| Widowed | 0.51 | −0.45, 0.55 | 0.84 | −0.05 | −0.08, −0.03 | <0.01 | ||||||
| Constant | −3.17 | −3.57, −2.78 | <0.01 | −3.29 | −3.99, −2.59 | <0.01 | 4.38 | 4.37, 4.39 | <0.01 | 4.39 | 4.37, 4.42 | <0.01 |
| AIC | 0.55 | 0.53 | 12.97 | 12.53 | ||||||||
| BIC | −22714 | −22703 | −3367 | −4589 | ||||||||
aThe direction of a priori hypothesied associations relative to the reference group are presented in brackets; bcoefficient; creference group; dother, not working due to work-related injury or disability; AIC Akaike information criteria, BIC Bayesian information criteria
Significant results at the p < 0.05 level are shown in bold