Table 2.
Prevalence of RHD Echocardiographic Findings and WHF Criteria for Borderline and Definite Disease in Children Undergoing Screening in Public Schools, Primary Care Centers, and Private Schools
| Variable | Public Schools (n=10 901) | Primary Care Centers (n=558) | Private Schools (n=589) | P Valuea |
|---|---|---|---|---|
| Borderline RHD, N (% [95% CI]) | 433 (4.0 [3.8–4.6]) | 26 (4.7 [3.4–7.2]) | 19 (3.2 [2.2–5.2]) | 0.46 |
| Definite RHD, N (% [95% CI]) | 60 (0.6 [0.5–0.8]) | 1 (0.2 [0.0–1.0]) | 2 (0.3 [0.1–1.2]) | 0.41 |
| Other, N (% [95% CI]) | 65 (0.6 [0.5–0.8]) | 6 (1.1 [0.5–2.3]) | 7 (1.2 [0.6–2.4]) | 0.10 |
| WHF criteria for borderline RHD, N (%) | ||||
| A. At least 2 morphological features of RHD of the MV without pathological MR or MS | 15 (3.5) | 1 (3.8) | 0 | 0.35 |
| B. Pathological MR | 360 (83.1) | 18 (69.2) | 16 (84.2) | |
| C. Pathological AR | 58 (13.4) | 7 (26.9) | 3 (15.8) | |
| WHF criteria for definite RHD, N (%) | ||||
| A. Pathological MR and at least 2 morphological features of RHD of the MV | 40 (66.7) | 1 (100) | 2 (100) | 0.83 |
| B. MS mean gradient >4 mm Hg | 0 | 0 | 0 | |
| C. Pathological AR and at least 2 morphological features of RHD of the AV | 5 (8.3) | 0 | 0 | |
| D. Borderline disease of both the AV and MV | 15 (25.0) | 0 | 0 | |
AR indicates aortic regurgitation; AV, aortic valve; CI, confidence interval; MR, mitral regurgitation; MS, mitral stenosis; MV, mitral valve; RHD, rheumatic heart disease; and WHF, World Heart Federation.
a
Fisher's exact test was used for multiple comparisons of proportions between groups.