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Time trade-off utility values in noninfectious uveitis
Niemeyer, K., Gonzales, J., Doan, T., Browne, E. N., Rao, M., & Acharya, N. (2019). Time trade-off utility values in noninfectious uveitis. American Journal of Ophthalmology, 208, 47-55. https://doi.org/10.1016/j.ajo.2019.06.005
PURPOSE: To investigate time trade-off (TTO) utility values in patients with noninfectious uveitis and determine whether patient demographics and clinical characteristics are associated with utility scores.
DESIGN: Time trade-off utility analysis.
METHODS: Setting: A tertiary care uveitis center in San Francisco, California, USA.
PATIENT POPULATION: One hundred and four consecutive adults with noninfectious uveitis, enrolled between November 2016 and February 2017.
MAIN OUTCOME MEASURES: TTO utility values, as collected by an interviewer-guided survey. Information regarding general health, ocular symptoms, and religion was also collected and medical record review was conducted to record anatomic location of uveitis, disease activity, visual acuity, and treatments. Multivariable regression analysis with backward selection was used to identify variables associated with TTO values.
RESULTS: Median TTO score was 0.975 (interquartile range [IQR]: 0.8-1.0), corresponding to trading a median 1.28 years of remaining life for healthy eyes (IQR: 0-6.29). Regression analysis revealed that worse eye visual acuity, >6 months of oral corticosteroid use, and current antidepressant use were associated with lower TTO scores (P = .008, P = .006, P = .008, respectively), controlling for age and sex. In particular, patients who had been taking oral corticosteroids for more than 6 months, regardless of dose, were 10.5 times more likely to trade 20% or more years of remaining life (TTO ≤0.8) than patients not taking oral corticosteroids (95% confidence interval: 2.3, 48.1; P = .002).
CONCLUSIONS: Patients with noninfectious uveitis had measurable, though modest, reductions in quality of life, as assessed by TTO, and these decreases were significantly associated with visual acuity in the worse eye and long-term oral corticosteroid use.
