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Table 7 Age-standardized glaucoma prevalence rates

From: A Population-based survey of the prevalence and types of glaucoma in Nigeria: results from the Nigeria National Blindness and Visual Impairment Survey

  Study sample Prevalence of glaucoma Magnitude of glaucoma
   Crude rate Age-adjusted ratea Estimated numbers
  N % N % % 95 % CI
Age group (years)
40–49 4889 35.97 93 1.90 1.51 1.96–2.94 166,308
50–59 3577 26.32 130 3.63 3.69 2.98–4.29 232,792
60–69 2773 20.40 178 6.42 8.85 3.99–5.43 318,689
70–79 1653 12.16 178 10.77 16.85 5.91–8.00 321,820
80+ 699 5.14 103 14.74 12.32 14.72–20.98 181,807
Total 13,591 100 682 5.02 5.02 4.60–5.47 1,221,416
  1. CI confidence interval
  2. aStandardized with the 2012 Nigeria population