Table 1 Clinical characteristics of subjects
| Â | Patients with CRC | Healthy subjects |
|---|---|---|
Total number | 250 | 56 |
Female (%) | 133 (53.2) | 27 (48.2) |
Age (years)a | 42.2 ± 13.9 | 36.3 ± 12.6 |
Cough duration (months)b | 24 (2–480) | 0 (0–0) |
Daytime cough scorea | 2.7 ± 0.9 | 0.0 ± 0.0 |
AITC challenges, n | 250 | 56 |
Capsaicin challenges, n | 234 | 53 |
Cough triggers, n (%) | ||
 Odours | 165 (66.0) | 0 (0) |
 Cold air | 122 (48.8) | 0 (0) |
 Dusty environment | 116 (46.4) | 0 (0) |
 Talking | 100 (40.0) | 0 (0) |
Laryngeal paresthesia, n (%) | 190 (76.0) | 0 (0) |