Skip to main content

Table 2 Results of the high dose salbutamol study (study 1)

From: Overcoming beta-agonist tolerance: high dose salbutamol and ipratropium bromide. Two randomised controlled trials

Treatment

Placebo

Formoterol

Pre-challenge FEV1 (L) (SD)

2.55 (0.75)

2.57 (0.72)

Post challenge FEV1 (L) (SD)

1.92 (0.59)

2.00 (0.51)

PD20 methacholine (mg) (geometric mean, 95% CI)

0.08 (0.03, 0.22)

0.10 (0.04, 0.25)

AUC salbutamol (%.time) (SD)

412 (140)

339 (201)

Difference: paired t-test (95% CI)

73 (-4, 149) p = 0.06

Difference: covariate analysis (placebo-formoterol) (least squares means, 95% CI)

63 (22, 105) p = 0.008

Post-salbutamol FEV1 at 20 mins (L) (SD)

2.79 (0.86)

2.67 (0.84)

Difference: paired t-test (95% CI)

0.12 (0.03, 0.20) p = 0.008

Difference: covariate analysis (placebo-formoterol) (least squares means, 95% CI)

0.12 (0.06, 0.19) p = 0.003