Research Article
Prevalence, Risk Factors, and Causes of Visual Impairment in an Elderly Chinese Uygur Population in Southern Xinjiang
Table 1
Demographic characteristics of the participants with different visual impairment levels.
| Parameters | Total (n) | Normal vision | Mild visual impairment | Moderate visual impairment | Severe visual impairment | Blindness | |
| Age (years) | 1465 | 56.7 ± 8.5 | 60.9 ± 8.6 | 65.4 ± 9.8 | 70.1 ± 10.6 | 67.9 ± 11.7 | ≤0.001 | Sex (%) | | | | | | | | Male | 673 | 447 | 80 | 93 | 26 | 27 | | Female | 792 | 543 | 115 | 94 | 17 | 23 | | | | | | | | | 0.085 | Education (n) | | | | | | | | Uneducated | 323 | 177 | 49 | 64 | 15 | 18 | | ≤primary school | 817 | 563 | 115 | 91 | 24 | 24 | | Junior middle school | 256 | 197 | 24 | 26 | 3 | 6 | | High school or higher | 69 | 53 | 7 | 6 | 1 | 2 | | | | | | | | | ≤0.001 | BMI (kg/m2) | 1465 | 25.3 ± 4.0 | 24.6 ± 3.6 | 23.8 ± 4.1 | 22.3 ± 3.6 | 22.9 ± 3.2 | ≤0.001 | Smoking | | | | | | | | Yes | 161 | 116 | 20 | 17 | 5 | 3 | | No | 1304 | 874 | 175 | 170 | 38 | 47 | | | | | | | | | 0.623 | Drinking | | | | | | | | Yes | 33 | 27 | 2 | 3 | 1 | 0 | | No | 1432 | 963 | 193 | 184 | 42 | 50 | | | | | | | | | 0.426 |
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BMI: body mass index; kg/m2: kilogram/meter2.
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