Estimated change in prevalence per 100 000 persons per degree latitude at 5-unit increments of latitude, estimated at 2018
| All crude | Crude restricted to those with age-specific data | Age-standardised | |
| 0 | 0.28 (0.23 to 0.34) | ||
| 5 | 0.40 (0.33 to 0.47) | 0.59 (0.41 to 0.78) | 0.58 (0.39 to 0.77) |
| 10 | 0.56 (0.47 to 0.65) | 0.79 (0.57 to 1.01) | 0.76 (0.54 to 0.99) |
| 15 | 0.79 (0.68 to 0.90) | 1.04 (0.78 to 1.31) | 1.01 (0.74 to 1.28) |
| 20 | 1.11 (0.97 to 1.24) | 1.38 (1.05 to 1.71) | 1.34 (1.01 to 1.67) |
| 25 | 1.55 (1.37 to 1.74) | 1.83 (1.40 to 2.26) | 1.77 (1.34 to 2.21) |
| 30 | 2.18 (1.92 to 2.45) | 2.43 (1.85 to 3.01) | 2.35 (1.76 to 2.94) |
| 35 | 3.07 (2.67 to 3.47) | 3.22 (2.40 to 4.04) | 3.11 (2.28 to 3.94) |
| 40 | 4.31 (3.69 to 4.94) | 4.26 (3.07 to 5.46) | 4.12 (2.91 to 5.33) |
| 45 | 6.06 (5.08 to 7.05) | 5.65 (3.88 to 7.42) | 5.45 (3.67 to 7.23) |
| 50 | 8.52 (6.95 to 10.10) | 7.49 (4.86 to 10.11) | 7.22 (4.57 to 9.86) |
| 55 | 13.00 (10.23 to 15.79) | 10.51 (6.40 to 14.61) | 10.09 (5.96 to 14.21) |
| 60 | −1.93 (−5.76 to 1.90) | 2.61 (0.20 to 5.02) | 3.05 (0.53 to 5.57) |
| 65 | − 14.84 ( − 19.91 to − 9.76) | − 6.96 ( − 11.42 to − 2.49) | − 5.83 ( − 10.37 to − 1.29) |
| 70 | − 14.39 ( − 16.71 to − 12.07) | − 12.22 ( − 17.07 to − 7.38) | − 11.27 ( − 16.32 to − 6.22) |
Slope (95% CI) represents change in prevalence per 100 000 persons per degree latitude at specified latitude. Results in boldface denote statistical significance (p<0.05). All analyses adjusted for prevalence year, use of systematic diagnostic criteria and inclusion of possible cases. Values at 0 latitude not calculated for crude and age-standardised analyses where age-specific data required, as there were no such prevalences at this latitude to allow estimation.