The internal consistency of PRO fatigue instruments in sarcoidosis: superiority of the PFI over the FAS.

CONCLUSION: We found that the PFI had "excellent" consistency in our sarcoidosis clinic. The FAS did not demonstrate the same degree of internal consistency. The Cronbach's estimate of the FAS with items #4 and #10 removed was vastly superior to the FAS. These data support our contention that FAS items #4 and #10 detract from the internal consistency of this PRO. They also suggest that the PFI is superior to the FAS in terms of reliability. PMID: 24003536 [PubMed - indexed for MEDLINE]
Source: Sarcoidosis Vasculitis and Diffuse Lung Diseases - Category: Respiratory Medicine Tags: Sarcoidosis Vasc Diffuse Lung Dis Source Type: research