Crude and census-adjusted prevalence of vision impairment and blindness by sex, age group and location
| Male (n=2710) | Female (n=6478) | 35–49 (n=3498) | 50+ (n=5690) | Rural (n=4149) | Urban (n=5039) | |||||||||||||
| Crude | Weighted† | Crude | Weighted† | Crude | Weighted† | Crude | Weighted† | Crude | Weighted† | Crude | Weighted† | |||||||
| n | % (95% CI) | % (95% CI) | n | % (95% CI) | % (95% CI) | n | % (95% CI) | % (95% CI) | n | % (95% CI) | % (95% CI) | n | % (95% CI) | % (95% CI) | n | % (95% CI) | % (95% CI) | |
| Vision impairment category* | ||||||||||||||||||
| No vision impairment (≥6/12) | 2289 | 84.5 (83.1 to 85.8) | 86.9 (85.5 to 88.2) | 5572 | 86.0 (85.1 to 86.8) | 81.3 (79.8 to 82.7) | 4990 | 96.6 (96.0 to 97.0) | 96.6 (95.8 to 97.3) | 2871 | 71.4 (70.0 to 72.8) | 72.9 (71.0 to 74.6) | 3539 | 85.3 (84.2 to 86.3) | 87.1 (85.4 to 88.6) | 4322 | 85.8 (84.8 to 86.7) | 86.2 (85.0 to 87.5) |
| Mild (<6/12 and ≥6/18) | 117 | 4.3 (3.6 to 5.2) | 3.7 (3.1 to 4.5) | 209 | 3.2 (2.8 to 3.7) | 4.2 (3.6 to 4.8) | 54 | 1.0 (0.8 to 1.4) | 1.2 (0.8 to 1.5) | 272 | 6.7 (6.0 to 7.6) | 6.4 (5.7 to 7.3) | 148 | 3.6 (3.0 to 4.2) | 3.2 (2.7 to 3.9) | 178 | 3.5 (3.1 to 4.1) | 3.4 (2.9 to 4.0) |
| Moderate (<6/18 and ≥6/60) | 201 | 7.4 (6.5 to 8.5) | 6.2 (5.3 to 7.2) | 525 | 8.1 (7.5 to 8.8) | 11.0 (9.9 to 12.2) | 98 | 1.9 (1.6 to 2.3) | 1.7 (1.3 to 2.3) | 628 | 15.6 (14.5 to 16.8) | 14.6 (13.2 to 16.1) | 319 | 7.7 (6.9 to 8.5) | 6.7 (5.6 to 8.0) | 407 | 8.1 (7.4 to 8.9) | 7.5 (6.5 to 8.5) |
| Severe (<6/60 and ≥3/60) | 58 | 2.1 (1.7 to 2.8) | 1.8 (1.4 to 2.4) | 113 | 1.7 (1.5 to 2.1) | 2.4 (2.0 to 2.9) | 16 | 0.3 (0.2 to 0.5) | 0.4 (0.2 to 0.7) | 155 | 3.9 (3.3 to 4.5) | 3.7 (3.1 to 4.3) | 91 | 2.2 (1.8 to 2.7) | 1.9 (1.5 to 2.4) | 80 | 1.6 (1.3 to 2.0) | 1.6 (1.3 to 2.1) |
| Blind (<3/60) | 45 | 1.7 (1.2 to 2.2) | 1.4 (1.0 to 1.8) | 59 | 0.9 (0.7 to 1.2) | 1.2 (0.9 to 1.6) | 10 | 0.2 (0.1 to 0.4) | 0.3 (0.1 to 0.5) | 94 | 2.3 (1.9 to 2.9) | 2.4 (1.9 to 3.0) | 52 | 1.3 (1.0 to 1.6) | 1.1 (0.8 to 1.5) | 52 | 1.0 (0.8 to 1.4) | 1.2 (0.9 to 1.7) |
| Any VI (<6/12) | 421 | 15.5 (14.2 to 17.0) | 10.8 (9.7 to 12.0) | 906 | 14.0 (13.2 to 14.9) | 15.9 (14.7 to 17.2) | 178 | 3.4 (3.0 to 4.0) | 3.4 (2.8 to 4.2) | 1149 | 28.6 (27.2 to 30.0) | 27.2 (25.4 to 29.0) | 610 | 14.7 (13.7 to 15.8) | 12.9 (11.5 to 14.6) | 717 | 14.2 (13.3 to 15.2) | 13.7 (12.5 to 15.0) |
| Moderate-to-severe VI (<6/18 and ≥3/60) | 259 | 9.6 (8.5 to 10.7) | 6.5 (5.7 to 7.5) | 638 | 9.9 (9.2 to 10.6) | 11.2 (10.2 to 12.4) | 114 | 2.2 (1.8 to 2.6) | 2.1 (1.6 to 2.7) | 783 | 19.5 (18.3 to 20.7) | 18.3 (16.8 to 19.9) | 410 | 9.9 (9.0 to 10.8) | 8.6 (7.4 to 10.0) | 487 | 9.7 (8.9 to 10.5) | 9.1 (8.1 to 10.2) |
*WHO ICD-11 categorisation, based on presenting distance visual acuity in better eye.34
†Weighted to age–sex distribution of the Gambia 2013 census.
VI, vision impairment.