Results of diary scores
| Salbutamol period | Placebo period | Mean difference | p value | 95% confidence interval | |
| Prescribed first | 27 | 21 | |||
| Mean daily score | 3.78 (2.09) | 3.66 (2.07) | 0.12 | 0.62 | −0.37 to 0.61 |
| Symptom free days | 4.19 (6.33) | 4.71 (6.64) | −0.52 | 0.54 | −2.2 to 1.19 |
| Days with daily score greater than 6 | 5.17 (5.63) | 4.33 (4.68) | 0.83 | 0.32 | −0.84 to 2.51 |
| Mean night cough | 1.07 (0.61) | 0.94 (0.59) | 0.13 | 0.1 | −0.03 to 0.29 |
| Mean night wheeze | 0.65 (0.62) | 0.65 (0.63) | 0.003 | 0.97 | −0.14 to 0.14 |
| Mean day cough | 1.25 (0.58) | 1.18 (0.56) | 0.08 | 0.29 | −0.07 to 0.22 |
| Mean day wheeze | 0.86 (0.67) | 0.85 (0.69) | 0.02 | 0.79 | −0.11 to 0.14 |
| Number of treatments | 2.71 (0.59) | 2.83 (0.47) | −0.10 | 0.14 | −0.24 to 0.03 |
| Number of extra treatments | 0.16 (0.3) | 0.15 (0.3) | 0.02 | 0.54 | −0.04 to 0.07 |
Values for SD in brackets.