Association of Mood or Affect With Respiratory-Related Quality of Life, Lung Function, and All-Cause Mortality in Fibrotic Interstitial Lung Disease

Abstract

Objective

To assess whether self-reported acute mood or affect is associated with other patient-reported outcome measures, lung function, and all-cause mortality, in patients with fibrotic interstitial lung disease (f-ILD).

Patients and Methods

The Positive and Negative Affect Schedule (PANAS) is a 20-item questionnaire reflecting recent mood or affect over the past week, reported as Positive, Negative, or Ratio (Positive:Negative) subscores. Baseline and serial PANAS scores were assessed for their correlation with the Chronic Respiratory Questionnaire, Self-Management Assessment Scale 30, and lung function over a 3-year study period, and association with incident anxiety, depression, and all-cause mortality.

Results

In total, 199 patients with f-ILD were enrolled. Baseline PANAS scores correlated moderately with Chronic Respiratory Questionnaire and Self-Management Assessment Scale 30 scores. Higher PANAS Positive and Ratio scores were associated with higher percent predicted forced vital capacity. Mean PANAS scores were higher or lower when stratified by clinically suspected anxiety and/or depression and predictive of all-cause mortality on adjusted analysis, respectively. Incident anxiety and/or depression was not associated with worse survival outcome.

Conclusion

Self-reported acute mood or affect may be associated with RR-QoL, lung function, and adjusted all-cause mortality in patients with f-ILD.