Table 1 Characteristics of the study population
From: Transient receptor potential genes, smoking, occupational exposures and cough in adults
Asthma | No asthma | |||||
|---|---|---|---|---|---|---|
Men | Women | P value | Men | Women | P value | |
n Study, n (%) | 368 | 476 | 1008 | 1038 | ||
EGEA | 107 (29.1) | 96 (20.2) | 248 (24.6) | 238 (22.9) | ||
ECRHS | 261 (70.9) | 380 (79.8) | 760 (75.4) | 800 (77.1) | ||
Age, mean (sd) Smoking habits, n (%) | 44.4 (8.3) | 42.2 (7.4) | 0.006 | 44.1 (7.7) | 43.9 (7.5) | 0.65 |
Never smokers | 141 (38.3) | 232 (48.7) | 0.004 | 372 (36.9) | 515 (49.6) | < 0.001 |
Ex smokers | 130 (35.3) | 125 (26.3) | 278 (27.6) | 237 (22.8) | ||
Current smokers | 97 (26.4) | 119 (25.0) | 358 (35.5) | 286 (27.6) | ||
≤ 16 pack-years | 36 (9.8) | 66 (13.9) | 121 (12.0) | 150 (14.5) | ||
> 16 pack-years | 49 (13.3) | 40 (8.4) | 188 (18.7) | 88 (8.5) | ||
pack-years unknown | 12 (3.3) | 13 (2.7) | 49 (4.9) | 48 (4.6) | ||
Exposure to VGDF, n(%)* Cough symptoms, n(%) | 182 (51.0) | 182 (39.8) | 0.002 | 544 (55.0) | 361 (36.0) | < 0.001 |
Nocturnal cough | 131 (35.7) | 272 (57.1) | < 0.001 | 226 (22.4) | 314 (30.3) | < 0.001 |
Usual Cough | 123 (33.6) | 195 (41.4) | < 0.001 | 167 (16.6) | 152 (14.7) | 0.23 |
Chronic cough | 64 (17.7) | 103 (22.1) | 0.12 | 73 (7.3) | 52 (5.1) | 0.03 |
Respiratory infection last 3 weeks, n (%) | 52 (14.4) | 54 (11.5) | 0.21 | 87 (8.7) | 80 (7.8) | 0.57 |