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Br J Ophthalmol 86:133-139 doi:10.1136/bjo.86.2.133
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Prevalence of visual impairment, blindness, and cataract surgery in the Hong Kong elderly

Table 7

Cataract surgery by age, sex, education, and housing

No examined† No cataract operated Prevalence‡ Adjusted OR (95% CI)§
*p<0.05, **p<0.01, ***p<0.001. †Not including seven people with missing visual acuity measurements; ‡crude prevalence per 100 examined subjects; §adjusted odds ratio (95% confidence interval); ¶does not include one 80+ year old illiterate female in public housing with missing visual acuity measurements.
Age (years)
    60–69 1729 76 4.6 1.0
    70–79 1279 137 10.7 2.33*** (1.71 to 3.17)
    80+ 426 96 22.2 5.22*** (2.95 to 9.26)
Sex
    Male 1377 96 6.9 1.0
    Female 2057 213 10.6 1.22 (0.94 to 1.58)
Education
    None 1663 200 12.2 1.0
    Primary 1140 77 6.5 0.62** (0.47 to 0.81)
    ≥ Secondary 631 32 5.0 0.55** (0.37 to 0.80)
Housing
    Public 1782 159 9.0 1.0
    Home 908 79 8.9 1.14 (0.76 to 1.72)
    Private 744 71 9.5 1.28 (0.97 to 1.70)
All 3434 309¶ 9.1

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