Ref (type)	Population	Outcome, Interventions	Results and statistical analysis	Effect size	Favours
Lung function
[70] Systematic review	10,695 people with COPD 13 RCTs in this analysis	Increase in pre-dose FEV1 1 month to >12 months with corticosteroid plus long-acting beta2 agonist (LABA) with LABA Absolute numbers not reported	WMD 0.06 L 95% CI 0.04 L to 0.07 L P = 0.0001	Effect size not calculated	corticosteroid plus LABA