Article Text

PDF
Economic inequality in presenting near vision acuity in a middle-aged population: a Blinder–Oaxaca decomposition
  1. Mohammad Hassan Emamian1,
  2. Hojjat Zeraati2,
  3. Reza Majdzadeh2,3,
  4. Mohammad Shariati4,
  5. Hassan Hashemi5,6,
  6. Ebrahim Jafarzadehpur7,
  7. Akbar Fotouhi2
  1. 1School of Public Health, Shahroud University of Medical Sciences, Shahroud, Iran
  2. 2Department of Epidemiology and Biostatistics, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
  3. 3Knowledge Utilization Research Centre (KURC), Tehran University of Medical Sciences, Tehran, Iran
  4. 4Department of Community Medicine, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
  5. 5Noor Ophthalmology Research Centre, Noor Eye Hospital, Tehran, Iran
  6. 6Farabi Eye Hospital, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
  7. 7Department of Optometry, Tehran University of Medical Sciences, Tehran, Iran
  1. Correspondence to Professor A Fotouhi, Department of Epidemiology and Biostatistics, School of Public Health, Tehran University of Medical Sciences, Tehran 14155-6446, Iran; afotouhi{at}tums.ac.ir

Abstract

Purpose To investigate economic inequality and its determinants in near vision, in a middle-aged population.

Methods In this population-based study, the presenting near vision in the better eye was investigated as the main outcome. If this vision revealed a value ≥1.6 M, the participant was considered to have presenting near vision impairment (PNVI). The effect of variables studied on PNVI was investigated using logistic regression. Economic inequality in PNVI was investigated using the Oaxaca–Blinder decomposition method.

Results PNVI in the better eye was observed in 18.2% (95% CI 16.8 to 19.6) of participants. The prevalence of PNVI in the high and low economic groups was 11.7% (95% CI 10.3 to 13.0) and 28.5% (95% CI 26.0 to 31.0), respectively. Age and education were observed as the main factors in the explained portion of this gap and were in favour of the high economic group. Gender and eye care utilisation were factors affecting the unexplained portion of this gap and were in favour of the low economic group.

Conclusions Economic inequality plays a significant role in PNVI, while age and education are among the main factors affecting this gap. The effect caused by any change in these two factors was found to have a greater effect on women with low economic status.

  • Epidemiology
  • Public health

Statistics from Altmetric.com

Request permissions

If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.