Table 2

Inter-item correlations(internal consistency reliability) of the interviewer and self-administered format for baseline scores

DOMAIN

GERMAN CRQ-IA (n = 33)

GERMAN CRQ-SA (n = 38)


Standardised Dyspnoea items

0.73

0.78

Fatigue items

0. 81

0.83

Emotional Function items

0.77

0.89

Mastery items

0.76

0.86


† Crohnbach's alpha. CRQ-IA = Interviewer administered Chronic Respiratory Questionnaire. CRQ-SA = Self-administered Chronic Respiratory Questionnaire

Puhan et al. Health and Quality of Life Outcomes 2004 2:1   doi:10.1186/1477-7525-2-1

Open Data