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Table 2 Effect of interventions on primary and secondary endpoints

From: Combination antibiotic therapy versus monotherapy in the treatment of acute exacerbations of chronic obstructive pulmonary disease: an open-label randomized trial

End Point

Monotherapy (n = 79)

Combination therapy (n = 60)

P-value#

Clinical success on Day 10, no. (%)

48 (60.7)

36 (60)

1

Clinical success on Day 20, no. (%)

70(88.6)

53 (88.3)

1

FEV1, L

 FEV1 on Day 1

0.75 ± 0.19

0.73 ± 0.21

0.22

 ΔFEV1 on Day 10

0.17 ± 0.21

0.20 ± 0.26

0.24

 ΔFEV1 on Day 20

0.18 ± 0.28

0.24 ± 0.25

0.56

VAS score

 ΔVAS score on Day 10

− 10.6 ± 9.6

− 10.5 ± 13.3

0.92

 ΔVAS score on Day 20

− 21.3 ± 15.1

− 23.8 ± 17.6

0.26

CRP (mg/L)

 ΔCRP on Day 10

− 13.5 ± 14.3

− 12.6 ± 16.1

0.099

 ΔCRP on Day 20

− 22.1 ± 14.5

− 26.9 ± 15.7

0.004

  1. FEV1 postbronchodilator forced expiratory volume in 1 s
  2. #Fisher’s Exact Test for propotion comparison; Mann–Whitney test for comparing the means