Table 4

 Distribution of variables in the final Cox model

CovariablesCoefficient (β)SEp ValueRR exp(β)95% CI
Mother’s schooling <4 years1.3690.5040.00663.931.46 to 10.57
ARF recurrence1.8430.5350.00066.322.21 to 18.02
Moderate to severe carditis2.7980.492<0.000116.426.26 to 43.08
Mother’s schooling and ARF recurrence−1.4280.6780.03510.240.06 to 0.90