Table 5 Pre-PFT questionnaires of BDTs
| Parameter | BDT (+) | BDT (−) | ||||
|---|---|---|---|---|---|---|
|
SP sign (+) (N = 12) |
SP sign (−) (N = 2235) | P value |
SP sign (+) (N = 119) |
SP sign (−) (N = 3728) | P value | |
| Smoking status, n (%) | .111 | .005 | ||||
| Current or former smoker | 3 (25%) | 1083 (48%) | 45 (38%) | 1929 (52%) | ||
| Never smoker | 9 (75%) | 1172 (52%) | 74 (62%) | 1799 (48%) | ||
| Chronic cough, n (%) | .338 | .270 | ||||
| Rare | 2 (17%) | 625 (28%) | 27 (23%) | 1016 (27%) | ||
| Sometimes | 10 (83%) | 1610 (72%) | 92 (77%) | 2712 (73%) | ||
| Sputum production, n (%) |
9/12 (75%) |
1559/2235 (70%) | 1.000 |
75/119 (63%) |
2651/3728 (71%) | .056 |
| Wheezing, n (%) |
11/12 (92%) |
1234/2235 (55%) | .011 |
68/119 (57%) |
1703/3728 (46%) | .014 |
| PFT indication, n (%) | ||||||
| Cough |
2/12 (17%) |
262/2235 (12%) | .643 |
8/119 (7%) |
328/3728 (9%) | .430 |
| COPD |
0/12 (0%) |
809/2235 (34%) | .006 |
33/119 (28%) |
1696/3728 (45%) | < .0001 |
| Asthma |
10/12 (83%) |
905/2235 (40%) | .002 |
38/119 (32%) |
720/3728 (19%) | < .0001 |
| Bronchiectasis |
0/12 (0%) |
54/2235 (2%) | 1.000 |
11/119 (9%) |
293/3728 (8%) | .582 |
| ILD |
0/12 (0%) |
12/2235 (1%) | 1.000 |
3/119 (3%) |
70/3728 (2%) | .493 |
| Rhinitis/sinusitis |
3/12 (25%) |
18/2235 (1%) | < .0001 |
21/119 (18%) |
39/3728 (1%) | < .0001 |
| Gastroesophageal reflux |
0/12 (0%) |
1/2235 (0%) | 1.000 |
3/119 (3%) |
0/3728 (0%) | < .0001 |
| Pneumonia |
3/12 (25%) |
56/2235 (3%) | .003 |
16/119 (13%) |
210/3728 (6%) | < .0001 |
| Shortness of breath |
1/12 (8%) |
114/2235 (5%) | .468 |
5/119 (4%) |
176/3728 (5%) | .792 |
| Chest distress |
0/12 (0%) |
9/2235 (0%) | 1.000 |
2/119 (2%) |
25/3728 (1%) | .203 |
| Othersa |
0/12 (0%) |
48/2235 (2%) | 1.000 |
5/119 (4%) |
171/3728 (5%) | .843 |