Respiratory Medicine · 2000 · 322 citations · 21 references
NursingClinical SciencesInternal MedicineFunctional AssessmentHealth AssessmentPulmonologyActivities Of Daily LivingActivity Limitation AssessmentChronic Obstructive Pulmonary DiseaseObstructive Lung DiseasePulmonary AssessmentPulmonary Function AssessmentChronic Obstructive Pulmonary Disease AssessmentFunctional Status Monitoring
21
The Measurement of Observer Agreement for Categorical Data
J. Richard Landis, Gary G. Koch · Biometrics · 1977 · 78.9K citations · Full text
The Hospital Anxiety and Depression Scale
A. S. Zigmond, R. P. Snaith · Acta Psychiatrica Scandinavica · 1983 · 46.6K citations
Statistics notes: Cronbach's alpha: Table 1
J M. Bland · BMJ · 1997 · 5.3K citations · Full text