From: Benefit of prompt initiation of single-inhaler fluticasone furoate, umeclidinium, and vilanterol (FF/UMEC/VI) in patients with COPD in England following an exacerbation: a retrospective cohort study
RR
95% CI
p-value
Overall (moderate and severe) exacerbation
1.0018
(1.0005–1.0031)
0.0080
Moderate exacerbation
1.0026
(1.0011–1.0041)
0.0010
Severe exacerbation
1.0004
(0.9982–1.0027)
0.7010