Mean(SD) measurements pre(A) and post(B) antibiotics
| A | B | Mean%change | p | |
| LCI | 12.2(4.3) | 12.5(4.1) | -3.8 | 0.31 |
| Scond(L-1) | 0.052(0.047) | 0.065(0.053) | -58.7 | 0.12 |
| Sacin(L-1) | 0.115(0.104) | 0.143(0.105) | -37.6 | 0.33 |
| FEV1(L) | 2.06(0.59) | 2.03(0.51) | 0.67 | 0.58 |
| FEV1z-score | -1.53(1.1) | -1.60(1.2) | -12.6 | 0.67 |