Table 4 Comparison of prevalence estimates between 2020 IACS criteria and simplified criteria
|  | 2020 IACS criteria | Simplified criteria | Difference between prevalence estimates (95% CI) | Kappa coefficient (κ, 95% CI) | ||
|---|---|---|---|---|---|---|
Scabies n | Prevalence % (95% CI) | Scabies n | Prevalence % (95% CI) | |||
Total (n = 9526) | 1577 | 16.6 (15.8, 17.3) | 1490 | 15.6 (14.9, 16.4) | 0.9 (−0.1, 2.0) | 0.82 (0.80–0.83) |
Country | ||||||
 Solomon Islands (n = 5224) | 786 | 15.0 (14.1, 16.0) | 788 | 15.1 (14.1, 16.1) | −0.0 (−1.4, 1.3) | 0.79 (0.77–0.80) |
 Fiji (n = 3351) | 470 | 14.0 (12.9, 15.2) | 450 | 13.4 (12.3, 14.6) | 0.6 (−1.15, 2.2) | 0.90 (0.88–0.91) |
 Timor-Leste (n = 951) | 321 | 33.8 (30.8, 36.8) | 252 | 26.5 (23.8, 29.4) | 7.3 (3.1, 11.4) | 0.75 (0.73–0.77) |
Sex | ||||||
 Male (n = 4537) | 804 | 17.7 (16.6, 18.9) | 772 | 17.0 (15.9, 18.1) | 0.7 (−0.9, 2.3) | 0.82 (0.81–0.84) |
 Female (n = 4989) | 773 | 15.5 (14.5, 16.5) | 718 | 14.4 (13.4, 15.4) | 1.1 (−0.3, 2.5) | 0.81 (0.80–0.83) |
Age (years) | ||||||
 0–1 (n = 438) | 124 | 28.3 (24.3, 32.7) | 135 | 30.8 (26.7, 35.3) | −2.5 (−8.6, 3.5) | 0.84 (0.83–0.86) |
 2–4 (n = 818) | 212 | 25.9 (23.0, 29.0) | 220 | 26.9 (24.0, 30.0) | −1.0 (−5.3, 3.3) | 0.81 (0.80–0.83) |
 5–9 (n = 1741) | 450 | 25.8 (23.8, 28.0) | 440 | 25.3 (23.3, 27.4) | 0.6 (−2.3, 3.5) | 0.81 (0.79–0.82) |
 10–14 (n = 1596) | 336 | 21.1 (19.1, 23.1) | 319 | 20.0 (18.1, 22.0) | 1.1 (−1.7, 3.9) | 0.78 (0.77–0.80) |
 15–29 (n = 1717) | 180 | 10.5 (9.1, 12.0) | 163 | 9.5 (8.2, 11.0) | 1.0 (−1.0, 3.0) | 0.80 (0.79–0.82) |
 30–49 (n = 1860) | 158 | 8.5 (7.3, 9.9) | 123 | 6.6 (5.6, 7.8) | 1.9 (0.2, 3.6) | 0.83 (0.81–0.84) |
  ≥ 50 (n = 1356) | 117 | 8.6 (7.2, 10.2) | 90 | 6.6 (5.4, 8.1) | 2.0 (−0.0, 4.0) | 0.82 (0.80–0.83) |