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Table 2 Summary data of analysis datasets with respect to recurrent exacerbations and early discontinuations

From: Improving the evaluation of COPD exacerbation treatment effects by accounting for early treatment discontinuations: a post-hoc analysis of randomized clinical trials

 

Dataset A

Dataset B

Dataset C

Dataset D

Dataset E

Number of patients available for analysis

1746

1072

1613

1218

2049

Number of mod/sev exacerbations

1186

949

655

1350

2179

Number of patients with R number of mod/sev exacerbations

R = 0

1086

537

1170

604

920

R = 1

376

286

301

265

554

R ≥ 2

284

249

142

349

575

Percentage of patients

with ≥1 mod/sev exacerbation

37.8%

49.9%

27.5%

50.4%

55.1%

Max. number of mod/sev exacerbations

12

10

6

11

11

Mean number of mod/sev exacerbations per patient years at risk

0.816

1.051

0.917

1.284

1.293

Number of early treatment discontinuations

392

221

235

180

421

Percentage of early treatment discontinuations

22.5%

20.6%

14.6%

14.8%

20.5%

Percentage of early treatment discontinuations in original data

31%

30%

19%

24%

25%

  1. mod moderate, sev severe