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Table 2 Sample and adjusted prevalence of blindness, severe (SVI), moderate (MVI) and early (EVI) visual impairment - bilateral PVA

From: Prevalence and causes of blindness, visual impairment among different ethnical minority groups in Xinjiang Uygur autonomous region, China

Sample results Age and Gender Adjusted results
  Han Kazak Uygur Other Total Males Females Total
n % (95% CI) n % (95% CI) n % (95% CI) n % (95% CI) n % (95% CI) n % (95% CI) n % (95% CI) n % (95% CI)
Blindness 27 1.6 (1.1–2.3) 40 2.3 (1.7–3.1) 0 0 2 0.5 (0.1–1.9) 69 1.7 (1.4–2.2) 1976 1.3 (0.7–1.8) 2033 1.3 (0.8–1.7) 4009 1.3 (0.8–1.7)
Severe VI 20 1.2 (0.8–1.8) 16 0.9 (0.6–1.5) 3 2.9 (0.9–8.5) 10 2.4 (1.3–4.4) 49 1.2 (0.9–1.6) 1787 1.1 (0. 5–1.7) 1551 1.0 (0.5–1.4) 3338 1.1 (0.7–1.4)
Moderate VI 70 4.1 (3.2–5.1) 50 2.9 (2.2–3.8) 7 6.7 (3.2–13.4) 16 3.9 (2.4–6.2) 143 3.6 (3.1–4.2) 4701 3.0 (2.2–3.8) 5000 3.1 (2.3–3.9) 9701 3.1 (2.4–3.7)
Early VI 126 7.4 (6.2–8.7) 72 4.1 (3.3–5.2)* 4 3.8 (1.4–9.8) 24 5.8 (3.9–8.5) 226 5.7 (5.0–6.4) 6478 4.2 (3.0–5.3) 9392 5.8 (4.7–7.0) 15,870 5.0 (4.0–6.0)
  1. *EVI prevalence of Khazak people is significantly lower than that of Han Chinese * P < 0.01