Functional and structural changes underlying the progression or regression of the cardiac abnormalities in the children with definite or borderline disease at initial screening compared with the control group
| Follow-up status | Initial RHD category | ||
| Definite (n=46) | Borderline (n=26) | Control (n=80) | |
| Unchanged | 18 (39.1%) | 10 (38.5%) | 73 (91.2%) |
| Progression | 8 (17.4%) | 6 (23.1%) | 7 (8.8%) |
| Increase in functional severity | 8 | 4 | 0 |
| Appearance of structural changes | 0 | 2 | 7 |
| Regression | 20 (43.5%) | 10 (38.5%) | |
| Resolution of functional and structural abnormalities | 9 | 0 | |
| Reduction in functional severity | 9 | 7 | |
| Regression of structural changes | 2 | 3 | |
RHD, rheumatic heart disease.