Prevalence of cataract by persons on better eye with blindness (BL), severe visual impairment (SVI), moderate visual impairment (MVI) or early visual impairment (EVI)—best corrected visual acuity (BCVA) or pinhole in Tibetan Autonomous Prefecture of Kandze
| Crude | Age adjusted with local population | |||||
| Male | Female | Total | Male | Female | Total | |
| % 95% CI | % 95% CI | % 95% CI | n† (%) 95% CI | n† (%) 95% CI | n† (%) 95% CI | |
| BL (BCVA <3/60) | 0.34 (0.16 to 0.70) | 0.82 (0.54 to 1.25)* | 0.61 (0.42 to 0.87) | 2929 (0.21) (0.08 to 0.60) | 1159 (0.69) (0.37 to 1.41) | 1767 (0.46) (0.26 to 0.85) |
| SVI (BCVA>/=3/60 and <6/60) | 0.48 (0.26 to 0.89) | 1.16 (0.82 to 1.64)* | 0.86 (0.63 to 1.17) | 1411 (0.32) (0.12 to 0.99) | 581 (1.01) (0.54 to 2.05) | 828 (0.67) (0.57 to 1.50) |
| MVI (BCVA>/=6/60 and <6/18) | 1.58 (1.13 to 2.22) | 3.03 (2.44 to 3.75)** | 2.39 (2.00 to 2.87) | 7812 (1.15) (0.59 to 2.37) | 3715 (2.55) (1.77 to 3.87) | 4183 (1.85) (1.33 to 2.66) |
| EVI (BCVA>/=6/18 and <6/12) | 3.79 (3.05 to 4.70) | 6.31 (5.45 to 7.30)*** | 5.21 (4.61 to 5.87) | 11 787 (2.76) (1.81 to 4.29) | 4397 (5.37) (4.10 to 7.08) | 7271 (4.11) (3.27 to 5.20) |
*P<0.05, **p<0.01, ***p<0.001.
† Number of people with BL/SVI/MVI/EVI estimated in the study area.