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Table 2 Efficacy endpoints: FENO, PC20 AMP, and FEV1.

From: Rapid effects of extrafine beclomethasone dipropionate/formoterol fixed combination inhaler on airway inflammation and bronchoconstriction in asthma: a randomised controlled trial

FENO (ppb) - Day 3, 4 hours

LS Mean

95% CI

   High dose

50.5

43.8, 57.3

   Low dose

58.9

52.2, 65.7

   Placebo

71.1

64.4, 77.8

FE NO (ppb) - Day 3, 2 hours

LS Mean

95% CI

   High dose

51.8

44.5, 59.2

   Low dose

60.2

53.0, 67.5

   Placebo

74.4

67.2, 81.5

AMP PC 20 (mg/mL) - Day 3, 4 hours

Log2 LS Mean

Log2 95% CI

   High dose

7.1

5.9, 8.2

   Low dose

6.0

4.9, 7.1

   Placebo

2.3

1.2, 3.4

FEV 1 (L) - AUC 0-4 h Day 1

LS Mean

95% CI

   High dose

3.6

3.5, 3.6

   Low dose

3.6

3.5, 3.6

   Placebo

3.4

3.3, 3.4

  1. LS Mean = least squares mean; CI = confidence interval; FENO = Fractional exhaled nitric oxide; AMP PC20 = AMP challenge provocative concentration causing a 20% fall in FEV1; FEV1 = forced expiratory volume in one second.