Table 1. Antistreptolysin O titer levels in the studied groups.
| Groups | Controls | ARF (1st attack) | Recurrent RF | Chronic RHD | Acute follicular tonsillitis | H of recurrent f. tonsillitis |
|---|---|---|---|---|---|---|
| ULN (80th percentile) | 400 | 200 | 1600 | |||
| GM (95% CI) | 245.09 (229.9,261.3) | 1334.9 (1193.3,1493.4) | 507.7 (430.1,599.2) | 215.4 (200.5,231.3) | 1133.8 (1070.9,1200.22 | 1151.9 (1104.5,1201.3) |
ARF, acute rheumatic fever; RHD, rheumatic heart disease; H of recurrent F tonsillitis, history of recurrent follicular tonsillitis; ULN, upper limit of normal (80th percentile); GM, geometric mean; CI, confidence Interval.