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Table 3 Linear mixed-effects model for predictors of health-related quality of life over entire follow-up

From: Health-related quality of life in persons with West Nile virus infection: a longitudinal cohort study

  Fixed effects (95% confidence interval)
  Time only model One additional covariate in model All covariates in model
Intercept 1.07
(0.95, 1.20)
(varies) 1.00
(0.80, 1.20)
Neuroinvasive disease −0.36
(−0.60, −0.11)
−0.09
(−0.32, 0.13)
Age (per 10 years), centered at 50 years −0.05
(−0.14, 0.04)
−0.01
(−0.09, 0.07)
Male 0.25
(0.0, 0.48)
0.25
(0.04, 0.45)
Number of comorbid conditions −0.24
(−0.34, −0.14)
−0.23
(−0.32, −0.13)
Baseline utility score, centered at 0.50 2.41
(1.6,0 3.21)
2.17
(1.38, 2.95)
Time elapsed since baseline (years) 0.73
(0.56, 0.90)
(varies) 0.59
(0.38, 0.80)
Interaction between neuroinvasive disease and years elapsed 0.02
(−0.28, 0.31)
  1. Results are measured as logit-transformed utility scores. Utility scores range on a scale from 0 (equivalent to death) to 1 (equivalent to perfect health)
  2. Significant results are bolded
  3. The coefficients represent the change in the mean logit of utility scores when the predictor increases by one unit and the remaining covariates are held constant