Table 1

 Changes in pulmonary function following salbutamol in infants grouped by baseline V′maxFRC Z score

Baseline Z score ⩽−2Baseline Z score >−2
*p<0.05, **p<0.005.
Number722
Mean change (SD) in V′maxFRC (ml/s)18.7 (19.3)−2.38 (31.8)
Mean change (SD) in V′maxFRC Z score0.37 (0.34)−0.05 (0.39)*
Mean % change (SD) from baseline V′maxFRC30.6 (24.8)−1.8 (18.7)**