Selected article for: "ANOVA variance and confidence interval"

Author: Alemu, Haile Woretaw
Title: Willingness to Pay for Spectacle: An Outreach-Based Cross-sectional Study.
  • Cord-id: frjkbned
  • Document date: 2020_7_7
  • ID: frjkbned
    Snippet: Aim The ophthalmic service lacks to supply spectacles following standard refraction, because of the absence of the optical dispensing unit. The aim was to determine willingness to pay for a pair of spectacles among presbyopic people if the service begins. Methods An interview-based questionnaire was employed among presbyopic people, who were refracted during a community-based outreach service conducted at Debre-Tabor town, South Gondar. Results A total of 322 study subjects have completed the qu
    Document: Aim The ophthalmic service lacks to supply spectacles following standard refraction, because of the absence of the optical dispensing unit. The aim was to determine willingness to pay for a pair of spectacles among presbyopic people if the service begins. Methods An interview-based questionnaire was employed among presbyopic people, who were refracted during a community-based outreach service conducted at Debre-Tabor town, South Gondar. Results A total of 322 study subjects have completed the questionnaire. The median value of gross monthly income was US $75.0 (Range from US $7.1-321.4). The mean amount of willing to pay for a pair of spectacles was US $17.9 (Range from US $1.1-107.1). Participants who were willing to pay at least US $12.5 (minimum cost at the public optical dispensing unit) for a pair of spectacles accounted 63.0% (95% CI: 57.8-68.3). Based on multivariable logistics regression output analysis age (P = .049), occupation (P = .001), monthly income (p = .001), and positive history of previous spectacles wear (P = .005) show statistically significant association with willingness to pay for a pair of spectacles. Conclusion In the study area, the mean amount willing to pay for a pair of spectacles was higher than the average set of the price at the public optical dispensing units in Gondar. Public willingness to pay for a pair of spectacles could be considered as an assurance to set up an affordable and financially sustainable spectacle supply service. Conducted on a community-based outreach service may likely pool keen population segments to overestimate the result. Abbreviations ANOVA: Analysis of Variance; CI: Confidence Interval; SPSS: Statistical Package for Social Science; USA: United States of America; US$: United States dollar.

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