Table 4 Pre-PFT questionnaires of BPTs
| Parameter | BPT (+) | P value | BPT (−) | P value | ||
|---|---|---|---|---|---|---|
|
SP sign (+) (N = 205) |
SP sign (−) (N = 3961) |
SP sign (+) (N = 1124) |
SP sign (−) (N = 4624) | |||
| Smoking status, n (%) | .348 | < .0001 | ||||
| Current or former smoker | 23 (11%) | 535 (14%) | 155 (15%) | 888 (19%) | ||
| Never smoker | 182 (89%) | 3426 (86%) | 969 (86%) | 3753 (81%) | ||
| Chronic cough, n (%) | < .0001 | < .0001 | ||||
| Rare | 49 (24%) | 1428 (36%) | 171 (15%) | 1176 (25%) | ||
| Sometimes | 156 (76%) | 2533 (64%) | 947 (85%) | 3448 (75%) | ||
| Sputum production, n (%) |
105/205 (51%) |
1967/3961 (50%) | .663 |
568/1124 (51%) |
2478/4624 (54%) | .066 |
| Wheezing, n (%) |
77/205 (38%) |
1209/3961 (31%) | .033 |
342/1124 (30%) |
865/4624 (19%) | < .0001 |
| PFT indication, n (%) | ||||||
| Cough |
61/205 (30%) |
1345/3961 (34%) | .360 |
663/1124 (59%) |
2494/4624 (54%) | < .0001 |
| COPD |
2/205 (1%) |
152/3961 (4%) | .034 |
64/1124 (6%) |
237/4624 (5%) | .443 |
| Asthma |
162/205 (79%) |
2098/3961 (53%) | < .0001 |
162/1124 (14%) |
675/4624 (15%) | .875 |
| Bronchiectasis |
5/205 (2%) |
26/3961 (1%) | .016 |
46/1124 (14%) |
90/4624 (2%) | < .0001 |
| ILD |
0/205 (0%) |
17/3961 (0%) | 1.000 |
10/1124 (1%) |
55/4624 (1%) | .394 |
| Rhinitis/sinusitis |
50/205 (24%) |
46/3961 (1%) | < .0001 |
147/1124 (13%) |
50/4624 (1%) | < .0001 |
| Gastroesophageal reflux |
2/205 (1%) |
1/3961 (0.03%) | .007 |
15/1124 (1%) |
3/4624 (0%) | < .0001 |
| Pneumonia |
10/205 (5%) |
29/3961 (0.7%) | < .0001 |
58/1124 (5%) |
102/4624 (2%) | < .0001 |
| Shortness of breath |
5/205 (2%) |
65/3961 (2%) | .393 |
43/1124 (4%) |
143/4624 (3%) | .213 |
| Chest distress |
4/205 (2%) |
35/3961 (1%) | .123 |
29/1124 (3%) |
121/4624 (3%) | .945 |
| Othersa |
4/205 (2%) |
147/3961 (4%) | 1.000 |
7/1124 (1%) |
654/4624 (14%) | < .0001 |