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Table 2 Cough frequency and severity, health-related quality-of-life: Changes from baseline and differences to placebo (Bayesian analyses)

From: The P2X3 receptor antagonist filapixant in patients with refractory chronic cough: a randomized controlled trial

Variable

Dose

Comparison with baseline

Comparison with placebo

%-change

Ratio to baseline [%]

90% credible limits [%]

P-value

%-difference

Ratio to placebo [%]

90% credible limits [%]

P-value

a) 24-h cough frequency [%]

Placebo

− 6.3

93.7

(81.5; 108)

0.222

N/A

N/A-

N/A

N/A

20 mg

− 3.5

96.5

(80.9; 115)

0.365

3.0

103

(89.1; 119)

0.630

80 mg

− 22.5

77.5

(65.0; 92.7)

0.010

− 17.3

82.7

(71.6; 95.3)

0.015

150 mg

− 32.3

67.7

(56.9; 81.0)

< 0.001

− 27.7

72.3

(62.6; 83.4)

< 0.001

250 mg

− 41.3

58.7

(49.3; 70.3)

< 0.001

− 37.2

62.8

(54.2; 72.4)

< 0.001

b) Awake cough frequency [%]

Placebo

− 4.9

95.1

(83.2; 108)

0.266

N/A

N/A

N/A

N/A

20 mg

− 3.7

96.3

(81.4; 114)

0.356

1.0

101

(88.0; 117)

0.563

80 mg

− 21.9

78.1

(65.7; 92.5)

0.0111

− 17.9

82.1

(71.4; 94.4)

0.012

150 mg

− 33.8

66.2

(55.9; 78.6)

< 0.001

− 30.3

69.7

(60.4; 80.2)

< 0.001

250 mg

− 43.1

56.9

(48.0; 67.6)

< 0.001

− 40.1

59.9

(51.9; 69.0)

< 0.001

  

Difference treatment—baseline

90% credible limits

P-value

Difference active—placebo

90% credible limits

P-value

c) Cough severity (VAS) [mm]

Placebo

− 3.78

(− 9.87; 2.19)

0.148

N/A

N/A

N/A

20 mg

− 2.36

(− 9.85; 5.20)

0.302

1.44

(− 4.84; 7.68)

0.649

80 mg

− 11.8

(− 19.6; − 4.29)

0.007

− 8.05

(− 14.3; − 1.87)

0.017

150 mg

− 18.1

(− 25.8; − 10.5)

< 0.001

− 14.3

(− 20.7; − 8.03)

< 0.001

250 mg

− 24.6

(− 32.1; − 16.9)

< 0.001

− 20.8

(− 27.0; − 14.7)

< 0.001

d)

LCQ total score

Placebo

1.07

(− 0.02; 2.15)

0.055

1.73

(0.58; 2.86)

0.008

BAY

2.80

(1.71; 3.88)

< 0.001

LCQ physical domain score

Placebo

0.36

(0.03; 0.68)

0.035

0.54

(0.15; 0.94)

0.014

BAY

0.90

(0.57; 1.22)

< 0.001

LCQ psychological domain score

Placebo

0.38

(− 0.00; 0.77)

0.050

0.46

(0.03; 0.89)

0.040

BAY

0.85

(0.46; 1.23)

< 0.001

LCQ social domain score

Placebo

0.31

(− 0.13; 0.75)

0.116

0.74

(0.36; 1.12)

0.002

BAY

1.06

(0.63; 1.50)

< 0.001

  1. 24-h cough counts were done on the 4th treatment day. Cough severity was assessed by the patient by means of a 100-mm VAS at the end of the 4th treatment day. The LCQ was completed before any treatments and at the end of each of the two treatment periods to assess the patient’s health-related quality of life. LCQ domain scores could range from 1 to 7, total scores from 3 to 21. Higher LCQ scores indicate a better quality of life. Total number of patients = 23
  2. BAY, active treatment period; LCQ, Leicester Cough Questionnaire; N/A, not applicable. VAS, visual analog scale (lower values indicate less severe coughing)