Dyspnoea questionnaire data
| A. Breathlessness responses for cohort | Yes | No | No answer |
| Are you troubled by shortness of breath when hurrying on the level or walking up a slight hill? | 121 | 344 | 31 |
| Do you have to walk slower than people of your age on the level because of breathlessness? | 46 | 422 | 28 |
| Do you ever have to stop for breath when walking at your own pace on the level? | 32 | 442 | 22 |
| Do you ever have to stop for breath after walking about 100 yards (or after a few minutes)? | 36 | 439 | 21 |
| Are you too breathless to leave the house or breathless dressing or undressing? | 7 | 470 | 19 |
| B. Breathlessness responses by visual CT diagnosis | PrePF (n=77) | No fibrosis (n=419) |
| Are you troubled by shortness of breath when hurrying on the level or walking up a slight hill?* | 43 no 26 yes (37%) 8 no answer | 301 no 95 yes (24%) 23 no answer |
| Do you have to walk slower than people of your age on the level because of breathlessness? | 60 no 9 yes (13%) 8 no answer | 362 no 37 yes (9.3%) 20 no answer |
| Do you ever have to stop for breath when walking at your own pace on the level? | 64 no 6 yes (8.6%) 7 no answer | 378 no 26 yes (6.4%) 15 no answer |
| Do you ever have to stop for breath after walking about 100 yards (or after a few minutes)? | 66 no 6 yes (8.3%) 5 no answer | 373 no 30 yes (7.4%) 16 no answer |
| Are you too breathless to leave the house or breathless dressing orundressing? | 71 no 1 yes (1.4%) 5 no answer | 399 no 6 yes (1.4%) 14 no answer |
For this question, p=0.02 for proportion responding ‘yes’ of those who answered question; all other questions have no significant difference between groups.
PrePF, preclinical pulmonary fibrosis.