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Table 2 Prevalence of eGFR< 60 in the absence of hypertension, diabetes and proteinuria by age, sex and study area

From: Prevalence and risk factors for impaired kidney function in the district of Anuradhapura, Sri Lanka: a cross-sectional population-representative survey in those at risk of chronic kidney disease of unknown aetiology

Prevalence Area 1
(n = 629)
Area 2
(n = 689)
Area 3
(n = 650)
Area 4
(n = 672)
Area 5
(n = 711)
Total
(n = 3551)
% Cl % Cl % Cl % Cl % Cl % Cl
eGFR < 60 (n = 202)
 18–30 years (n = 728) 0   0.7 0.0–2.1 0.7 0.0–2.1 0   0   0.3 0.0–0.7
 31–40 years (n = 955) 0   2.8 0.3–5.3 0.6 0.0–1.8 0.5 0.0–1.6 0.4 0.0–1.3 0.8 0.2–1.4
 41–50 years (n = 788) 1.6 0.0–3.9 4.1 1.3–6.9 4.0 1.1–7.0 5.4 1.9–8.8 4.2 1.1–7.3 4.0 2.6–5.3
 51–60 years (n = 502) 3.5 0.1–6.9 6.4 1.7–11.2 9.1 3.3–14.8 8.3 2.7–13.9 12.1 6.0–18.1 7.8 5.6–10.1
 61–70 years (n = 297) 13.2 4.9–21.5 21.4 10.3–32.5 22.4 11.3–33.4 43.1 29.9–56.2 25.9 15.9–36.0 24.9 20.1–29.7
  > 70 (n = 81) 30.7 11.7–49.7 40.0 11.9–68.1 28.5 1.5–55.6 58.3 37.0–79.6 37.5 10.8–64.1 40.0 29.9–50.0
 All (n = 3351) 3.7 2.2–5.1 5.6 3.9–7.4 5.4 3.6–7.1 8.5 6.4–10.6 6.7 4.9–8.6 6.0 5.2–6.8
eGFR < 60 among males (n = 116)
 18–30 years (n = 162) 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0
 31–40 years (n = 246) 0 0.0 3.4 0.0–8.1 2.3 0.0–7.0 0 0.0 1.8 0.0–5.5 1.6 0.0–3.2
 41–50 years (n = 288) 2.9 0.0–8.9 2.8 0.0–6.7 9.3 2.6–16.1 8.9 1.2–16.6 3.8 0.0–9.2 5.9 3.2–8.6
 51–60 years (n = 179) 8.1 0.0–17.3 20.0 6.0–33.9 13.5 1.9–25.1 29.4 13.3–45.5 25.0 10.1–39.8 19.0 13.2–24.8
 61–70 years (n = 125) 11.7 0.3–23.2 36.8 12.9–60.7 41.7 20.4–62.9 50.0 28.4–71.6 50.0 28.4–71.6 36.0 27.5–44.5
  > 70 (n = 37) 42.8 0.0–92.3 14.3 0.0–49.2 50.0 0.0–100.0 60.0 23.1–96.9 42.8 0.0–92.2 43.2 26.5–59.9
 All (n = 1037) 5.8 2.4–9.1 8.0 4.5–11.5 11.8 7.5–16.2 17.5 12.0–23.0 13.2 8.5–17.9 11.2 9.2–13.1
eGFR < 60 among females (n = 86)
 18–30 years (n = 566) 0 0.0 0.9 0.0–2.6 0.8 0.0–2.5 0 0.0 0 0.0 0.3 0.0–0.8
 31–40 years (n = 709) 0 0.0 2.4 0.0–5.0 0 0.0 0.6 0.0–1.9 0.6 0.0–1.7 0.7 0.1–1.3
 41–50 years (n = 500) 2.5 0.0–6.0 5.5 1.2–9.9 1.0 0.0–3.1 3.7 0.1–7.5 3.6 0.1–7.2 3.4 1.8–4.9
 51–60 years (n = 323) 0 0.0 2.9 0.0–7.2 7.3 0.2–14.3 3.6 0.0–8.6 10.7 3.5–17.8 4.9 2.5–7.3
 61–70 years (n = 172) 13.5 1.9–25.1 12.9 0.4–24.4 6.9 0.0–16.7 37.9 19.1–56.7 13.0 2.9–23.2 16.3 10.7–21.8
  > 70 (n = 44) 41.7 8.9–74.4 66.7 12.5–100.0 12.5 0.0–42.0 50.0 16.8–83.2 33.3 0.0–87.5 40.9 25.8–56.0
 All (n = 2314) 2.7 1.2–4.2 4.4 2.5–6.3 2.1 0.7–3.4 4.9 3.0–6.9 4.1 2.4–5.8 3.7 2.9–4.5