| last more than 8 weeks | 0.16 |
| last for month | 0.13 |
| many causes | 0.54 |
| persistent | 0.26 |
| disruptive | 0.16 |
| caused by asthma | 0.55 |
| caused by acid reflux | 0.50 |
| caused by gerd | 0.46 |
| treated | 0.41 |
| termed as smoker's coug… | 0.39 |
| diagnosed | 0.25 |
| caused by allergy | 0.16 |
| associated with emphyse… | 0.16 |
| associated with other l… | 0.16 |