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Table 4 Response feature analysis: Utility scoresa (95% confidence interval) summarized into area under the curve

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

  Area under the curveb
  Six months onward One year onward
Total cohort 0.78
(0.76, 0.81)
n = 108
0.81
(0.77, 0.84)
n = 59
Neuroinvasive 0.75
(0.71, 0.79)
n = 45
0.80
(0.75, 0.85)
n = 30
Nonneuroinvasive 0.80
(0.77, 0.83)
n = 56
0.82
(0.76, 0.86)
n = 29
  1. aUtility scores range on a scale from 0 (equivalent to being dead) to 1 (equivalent to perfect health). Larger values indicate better health-related quality of life. Scores are derived from the Medical Outcomes Study Short-Form-6D health state classification
  2. Note: One patient missing utility scores at all visits
  3. bArea under the curve is the integral of the utility-time curve. Areas are time-weighted (Total area after one year ÷ follow-up time)