Table 3. Relationship between SRC and PND or heartburn.
| Variable | Total (n = 417) | SRC (+) (n = 121) | SRC (−) (n = 296) | p value |
|---|---|---|---|---|
| PND | 167 (40.0) | 61 (50.4) | 106 (35.8) | 0.006 |
| PND-cough | 68 (16.3) | 45 (37.2) | 23 (7.8) | < 0.001 |
| PND-cough/PND | 40.7% | 73.8% | 21.7% | < 0.001 |
| HB | 121 (29.0) | 55 (45.5) | 66 (22.2) | 0.002 |
| HB-cough | 27 (6.5) | 20 (16.5) | 7 (2.4) | < 0.001 |
| HB-cough/HB | 22.3% | 36.4% | 10.6% | 0.001 |
Values are presented as number (%) unless otherwise indicated.
SRC, swallowing-related cough; PND, postnasal drip; PND-cough, postnasal drip-induced cough; HB, heartburn; HB-cough, heartburn-induced cough.