Skip to main content

Table 6 Multivariate Poisson regression analyses of EQ-5D-5L disutility scores, EQ-VAS scores and socio-demographic variables

From: Health-related quality of life measured using the EQ-5D–5L: South Australian population norms

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   
  1. 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
  2. Significant results at the p < 0.05 level are shown in bold