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Table 1 Patient baseline characteristics

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

Age [years] (mean ± SD; range)

60.4 ± 9.1; 43–77

Age classification (< 65 years: ≥ 65 years) (N)

14 (16%): 9 (39%)

Sex (male: female ratio) (N)

5 (22%): 18 (78%)

Body weight [kg] (mean ± SD; range)

72.5 ± 11.9; 49.3–95.4

Body mass index [kg/m2] (mean ± SD; range)

26.8 ± 4.21; 19.6–34.3

Race

 Black or African American (N)

1 (4.3%)

 White (N)

22 (95.7%)

Ethnicity

 Not Hispanic or Latino (N)

23 (100%)

Smoking history

 Never (N)

14 (60.9%)

 Former (N)

9 (39.1%)

Other tobacco/cigar/pipe

 Former (N)

2 (8.7%)

 Never (N)

21 (91.35)

Alcohol use

 Abstinent (N)

5 (21.75)

 Light (N)

16 (69.65)

 Moderate (N)

2 (8.75)

Duration of cough [years]a (mean ± SD; range)

12.2 ± 10.02; 2–45

Baseline cough count (Period 1)

 24-h cough count [coughs/h] (geometric mean ± SD; range)

28.0 / 156; 0.7–513

 Awake cough count [coughs/h] (geometric mean ± SD; range)

37.8 / 167; 1.0–745

Baseline LCQ scores (Period 1)

 LCQ total score (mean ± SD; range)

10.5 ± 3.16; 6.04–15.6

 LCQ physical domain score (mean ± SD; range)

3.68 ± 1.10; 1.75–5.38

 LCQ psychological domain score (mean ± SD; range)

3.67 ± 1.20; 1.43—5.43

 LCQ social domain score (mean ± SD; range)

3.16 ± 1.24; 1.00—5.25

  1. Percentages refer to the total number of study participants (N = 23).
  2. LCQ, Leicester Cough Questionnaire (higher values indicate a better quality of life; domain scores can range from 1 to 7, total scores from 3 to 21); N, number of patients; SD, standard deviation. abased on medical history entries with the high-level term ‘Coughing and associated symptoms’