Table 3.

Dyspnea Questionnaire Data

A. Breathlessness Reponses 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 or undressing?	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.