Table 2.
Adjusted-prevalence of myopia and other refractive errors among adults aged 40–80 in Gansu, China, 2016.
| N | Prevalence | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Crude | P (95% CI) | Adjusted | P (95% CI) | Age group | |||||
| 40–49 | 50–59 | 60–69 | 70–80 | ||||||
| Myopia | |||||||||
| Overall | 1080 | 28.1% | (26.7–29.5) | 28.8% | (27.4–30.3) | 35.6% | 26.3% | 18.3% | 25.8% |
| Han ethnicity | 916 | 32.9% | (31.1–34.6) | 34.3% | (32.5–36.1) | 44.3% | 30.8% | 19.8% | 25.8% |
| Yugur ethnicity | 164 | 15.5% | (13.3–17.7) | 16.4% | (14.2–18.7) | 17.4% | 13.3% | 13.3% | 25.8% |
| Men | 464 | 27.3% | (25.2–29.5) | 28.3% | (26.2–30.4) | 33.8% | 26.4% | 18.5% | 27.1% |
| Women | 616 | 28.7% | (26.8–30.6) | 29.4% | (27.4–31.3) | 37.0% | 26.3% | 18.1% | 24.3% |
| Low myopia | |||||||||
| Overall | 757 | 19.7% | (18.4–20.9) | 20.1% | (18.8–21.4) | 23.0% | 19.3% | 14.6% | 19.4% |
| Han ethnicity | 619 | 22.2% | (20.7–23.7) | 22.9% | (21.3–24.4) | 27.4% | 21.8% | 15.4% | 19.4% |
| Yugur ethnicity | 138 | 13.1% | (11.0–15.1) | 13.6% | (11.5–15.7) | 13.8% | 11.9% | 12.3% | 19.4% |
| Men | 372 | 21.9% | (20.0–23.9) | 20.4% | (18.5–22.4) | 22.5% | 20.6% | 15.6% | 20.0% |
| Women | 415 | 19.3% | (17.7–21.0) | 19.7% | (18.1–21.4) | 23.3% | 18.4% | 13.7% | 18.6% |
| Moderate myopia | |||||||||
| Overall | 182 | 4.7% | (4.1–5.4) | 5.1% | (4.4–5.8) | 7.2% | 3.8% | 2.0% | 5.2% |
| Han ethnicity | 163 | 5.8% | (5.0–6.7) | 6.4% | (5.5–7.3) | 9.5% | 4.7% | 2.2% | 4.8% |
| Yugur ethnicity | 19 | 1.8% | (1.0–2.6) | 2.2% | (1.3–3.1) | 2.3% | 1.1% | 1.0% | 6.5% |
| Men | 77 | 4.5% | (3.5–5.5) | 5.0% | (3.9–6.0) | 7.1% | 3.5% | 1.5% | 5.9% |
| Women | 105 | 4.9% | (4.0–5.8) | 5.2% | (4.2–6.1) | 7.2% | 4.0% | 2.3% | 4.3% |
| High myopia | |||||||||
| Overall | 141 | 3.7% | (3.1–4.3) | 3.6% | (3.0–4.2) | 5.4% | 3.2% | 1.7% | 1.3% |
| Han ethnicity | 134 | 4.8% | (4.0–5.6) | 5.0% | (4.2–5.9) | 7.5% | 4.2% | 2.2% | 1.6% |
| Yugur ethnicity | 7 | 0.7% | (0.2–1.2) | 0.7% | (0.2–1.2) | 1.3% | 0.3% | 0.0% | 0.0% |
| Men | 45 | 2.7% | (1.9–3.4) | 2.8% | (2.0–3.6) | 4.1% | 2.2% | 1.3% | 1.2% |
| Women | 96 | 4.5% | (3.6–5.3) | 4.5% | (3.6–5.4) | 6.5% | 4.0% | 2.1% | 1.4% |
| Emmetropia | |||||||||
| Overall | 1953 | 50.8% | (49.2–52.4) | 49.9% | (48.4–51.5) | 56.2% | 53.5% | 40.5% | 30.3% |
| Han ethnicity | 1323 | 47.5% | (45.6–49.3) | 46.5% | (44.7–48.4) | 50.3% | 51.3% | 39.8% | 30.6% |
| Yugur ethnicity | 630 | 59.6% | (56.6–62.6) | 57.3% | (54.3–60.3) | 68.6% | 59.7% | 42.6% | 29.0% |
| Men | 846 | 49.9% | (47.5–52.2) | 49.4% | (47.0–51.7) | 57.5% | 53.2% | 37.9% | 24.7% |
| Women | 1107 | 51.5% | (49.4–53.7) | 50.5% | (48.4–52.6) | 55.2% | 53.6% | 42.8% | 37.1% |
| Hyperopia | |||||||||
| Overall | 812 | 21.1% | (19.8–22.4) | 21.2% | (19.9–22.5) | 8.2% | 20.2% | 41.2% | 43.9% |
| Han ethnicity | 549 | 19.7% | (18.2–21.2) | 19.2% | (17.7–20.6) | 5.4% | 17.9% | 40.3% | 43.5% |
| Yugur ethnicity | 263 | 24.9% | (22.3–27.5) | 26.2% | (23.6–28.9) | 14.0% | 26.9% | 44.1% | 45.2% |
| Men | 387 | 22.8% | (20.8–24.8) | 22.3% | (20.3–24.3) | 8.7% | 20.4% | 43.6% | 48.2% |
| Women | 425 | 19.8% | (18.1–21.5) | 20.1% | (18.4–21.8) | 7.8% | 20.0% | 39.1% | 38.6% |
Note: CI, confidence interval. Prevalence of All subjects were adjusted by age and sex. Prevalence of the Han ethnicity, Yugur ethnicity, Men and Women were adjusted by age.