FIGURE 2.

Overall survival stratified by diagnosis groups, including cystic fibrosis (CF), chronic obstructive pulmonary disease (COPD), pulmonary fibrosis (IPF), and other (including pulmonary hypertension, α−1 anti-trypsin deficiency, and lymphangioleiomyomastosis). There is a statistically significant difference in survival among the groups (P<.007). Ninety-five percent confidence limits are represented by the thin lines. See Table E1 for survival and 95% confidence intervals separated by disease process.