Participant baseline demographics (n=17)
| Demographics | Total | |
| Age years# (mean±sd) | 61.0±9.85 | |
| Age range years# | ||
| 18–64 | 10 (59) | |
| 65–74 | 7 (41) | |
| Sex | ||
| Female | 15 (88) | |
| Male | 2 (12) | |
| BMI kg·m−2 (mean±sd) | 27.61±4.96 | |
| Height (cm) (mean±sd) | 162.9±6.58 | |
| Weight (kg) (mean±sd) | 73.19±13.3 | |
| Ethnicity | ||
| Hispanic or Latino | 0 | |
| Not Hispanic or Latino | 17 (100) | |
| Race | ||
| Asian – South East Asian Heritage | 1 (6) | |
| White – White/Caucasian/European Heritage | 16 (94) | |
| GSK2798745 | Placebo | |
| Baseline day-time 10-h cough count (geometric mean (95% CI)) | 205.2 (116.7–360.6) | 242.5 (144.7–406.4) |
| Baseline Cough Severity VAS (mean±sd) | 53.9±18.5 | 57.2±23.35 |
| Baseline Urge to Cough VAS (mean±sd) | 58.6±18.4 | 56.2±26.81 |
| Baseline LCQ (mean±sd) | 12.07±3.6 | 11.62±3.49 |
Data are presented as n (%) unless otherwise indicated. BMI: body mass index; VAS: visual analogue scale; LCQ: Leicester Cough Questionnaire. #: birth date was imputed as June 30 in the year of birth.