Abstract
Purpose: Visual impairment from cataracts is closely associated with low income, but trial evidence regarding the impact of surgery on income is lacking. We investigated whether cataract surgery could increase personal income.
Design: A 2-arm, parallel-group, open-label, randomized controlled trial (ClinicalTrials.gov, NCT03020056).
Methods: Persons aged 50 years or older in rural Guangdong, China, with best-corrected visual acuity
Results: Among the 292 eligible persons (5.40%, mean age = 74.0 y, 61.0% women) randomly assigned to intervention (n = 146) or control (n = 146) groups, 12 participants (8.22%) in the intervention group and 1 (0.68%) in the control did not receive the allocated intervention. By study closeout, 18 participants (6.16%) were lost to follow-up. The mean 1-year income increase of the intervention group ($2469–$3588; change = $1119) was significantly larger than that of the controls ($2258–$2052; change = $–206), a between-group difference of $1325 (relative increase = 54.0%; 95% CI = $739 to $1911; P < 0.001). In multivariable modeling, intervention group membership was associated with greater income increase (β = 1143.2; 95% CI = 582.0 to 1704.3; P < 0.001). Greater improvement in best-corrected visual acuity was associated with income increase in univariable modeling (β = 1626.9; 95% CI = 1083.6 to 2170.1; P < 0.001).
Conclusions: Cataract surgery substantially increases personal income in rural China, offering a strategy for poverty alleviation. The strong association between increased income and change in visual acuity enhances the biological plausibility of the result.
Design: A 2-arm, parallel-group, open-label, randomized controlled trial (ClinicalTrials.gov, NCT03020056).
Methods: Persons aged 50 years or older in rural Guangdong, China, with best-corrected visual acuity
Results: Among the 292 eligible persons (5.40%, mean age = 74.0 y, 61.0% women) randomly assigned to intervention (n = 146) or control (n = 146) groups, 12 participants (8.22%) in the intervention group and 1 (0.68%) in the control did not receive the allocated intervention. By study closeout, 18 participants (6.16%) were lost to follow-up. The mean 1-year income increase of the intervention group ($2469–$3588; change = $1119) was significantly larger than that of the controls ($2258–$2052; change = $–206), a between-group difference of $1325 (relative increase = 54.0%; 95% CI = $739 to $1911; P < 0.001). In multivariable modeling, intervention group membership was associated with greater income increase (β = 1143.2; 95% CI = 582.0 to 1704.3; P < 0.001). Greater improvement in best-corrected visual acuity was associated with income increase in univariable modeling (β = 1626.9; 95% CI = 1083.6 to 2170.1; P < 0.001).
Conclusions: Cataract surgery substantially increases personal income in rural China, offering a strategy for poverty alleviation. The strong association between increased income and change in visual acuity enhances the biological plausibility of the result.
Original language | English |
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Pages (from-to) | 355-363 |
Number of pages | 9 |
Journal | Asia-Pacific Journal of Ophthalmology |
Volume | 12 |
Issue number | 4 |
DOIs | |
Publication status | Published - 21 Jul 2023 |
Bibliographical note
Funding Information:This study is supported by the National Natural Science Funds of China (82070941, 82070940) and the Construction Project of High-Level Hospitals in Guangdong Province (303020102).
Publisher Copyright:
© 2023 Asia-Pacific Academy of Ophthalmology. All rights reserved.
Keywords
- cataract surgery
- China
- income
- quality of life
- randomized controlled trial
ASJC Scopus subject areas
- Ophthalmology