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Title: Utility values associated with vitreous floaters
Authors: Wagle, A.M.
Lim, W.-Y. 
Yap, T.-P.
Neelam, K.
Au Eong, K.-G.
Issue Date: Jul-2011
Citation: Wagle, A.M., Lim, W.-Y., Yap, T.-P., Neelam, K., Au Eong, K.-G. (2011-07). Utility values associated with vitreous floaters. American Journal of Ophthalmology 152 (1) : 60-65. ScholarBank@NUS Repository.
Abstract: Purpose: To ascertain the health-related quality of life associated with symptomatic degenerative vitreous floaters. Design: Cross-sectional questionnaire survey. Methods: In this institution-based study, 311 outpatients aged 21 years and older who presented with symptoms of floaters were enrolled. Data from 266 patients (85.5%) who completed the questionnaire were analyzed. Utility values were assessed using a standardized utility value questionnaire. The time trade-off (TTO) and standard gamble (SG) for death and blindness techniques were used to calculate the utility values. Descriptive, univariate, and multivariate analyses were performed using Stata Release 6.0. Results: The mean age of the study population was 52.9 ± 12.02 years (range, 2197). The mean utility values were 0.89, 0.89, and 0.93 for TTO, SG (death), and SG (blindness), respectively. Patients aged ≤55 years reported significantly lower SG (blindness) utility values when compared with patients above 55 years of age (age ≤55 = 0.92, age >55 = 0.94, P = .007). Utility measurements did not demonstrate significant relationship with any of the other socio-demographic variables examined in this study. The utility values did not demonstrate any significant relationship with other ocular characteristics such as duration of symptoms, presence of a posterior vitreous detachment, and presence or severity of myopia. Conclusions: Symptomatic degenerative vitreous floaters have a negative impact on health-related quality of life. Younger symptomatic patients are more likely to take a risk of blindness to get rid of the floaters than older patients. © 2011 Elsevier Inc.
Source Title: American Journal of Ophthalmology
ISSN: 00029394
DOI: 10.1016/j.ajo.2011.01.026
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