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Table 3 AECOPD per person year by study group

From: Effect of beta-blockers on exacerbation rate and lung function in chronic obstructive pulmonary disease (COPD)

Statcope

N

Exacerbation rate per person-year (95% CI)

 +BB

63

1.14 (0.81,1.46)

 −BB

625

1.34 (1.22,1.46)

Macro

 +BB

107

1.72 (1.37,2.08)

 −BB

424

1.71 (1.53,1.88)