Last examination | Less than one year | Less than two years and more than 1 year | Between two and three years | Over three years ago | Never |
---|---|---|---|---|---|
Age group | Prop (%) CI(%) | Prop (%) CI(%) | Prop (%) CI(%) | Prop (%) CI(%) | Prop (%) CI(%) |
 40–49 | 11.9(10.1–13.9) | 9.1(7.7–10.6) | 3.6(2.8–4.6) | 3.2(2.6–4.0) | 72.2(69.9–74.5) |
 50–59 | 22.3(19.8–25.0) | 15.2(13.3–17.3) | 6.0(4.9–7.4) | 8.0(6.5–9.8) | 48.5(45.6–51.4) |
 60–69 | 30.2(27.0–33.5) | 15.1(12.9–17.5) | 7.4(5.8–9.3) | 12.4(10.4–14.7) | 35.0(31.8–38.4) |
 70–79 | 26.0(22.0–30.4) | 14.0(11.1–17.5) | 6.6(4.7–9.2) | 23.7(19.6–28.4) | 29.8(25.7–34.2) |
 80 or more | 21.4(15.8–28.4) | 13.1(8.4–19.7) | 5.1(3.0–8.6) | 26.7(21.0–33.3) | 33.7(26.7–41.6) |
 Total | 20.5(19.2–21.9) | 12.8(12.0–13.9) | 5.5(4.9–6.1) | 9.6(8.6–10.6) | 51.7(50.1–53.3) |