COPD exacerbations according to severity of COPD ‐ pulsed antibiotics
Study	Gold stage	Odds ratio for exacerbations, moxifloxacin vs placebo (95% CI)	P value
Sethi 2010	2 : FEV1 (80% ‐ 50%)	0.65 (0.39 to 1.06)	0.091
Sethi 2010	3 : FEV1 (50% ‐ 30%)	0.81 (0.58 to 1.10)	0.192
Sethi 2010	4 : FEV1 (< 30%)	0.83 (0.54 to 1.28)	0.459