Table 6

Test–retest reliability: intraclass correlation coefficients between screening (day 14) and baseline (day 0) for QOL-B scores

	AIR-BX1 (N=266)		AIR-BX2 (N=274)
QOL-B V.3.0 scale	n*	Intraclass correlation coefficient	n*	Intraclass correlation coefficient
Respiratory Symptoms	266	0.85	268	0.82
Physical Functioning	266	0.84	273	0.86
Vitality	266	0.72	273	0.76
Role Functioning	265	0.87	270	0.86
Health Perceptions	266	0.79	272	0.74
Emotional Functioning	266	0.79	273	0.80
Social Functioning	266	0.77	270	0.84
Treatment Burden†	222	0.78	220	0.74

*Intraclass correlation coefficients were determined from screening and baseline measurements, both of which occurred before AZLI/placebo treatments. Analyses included patients for whom the specified QOL-B scale measurements were available at both screening and baseline.
†Patients who were not receiving treatment for bronchiectasis were instructed to skip the Treatment Burden scale.
QOL-B, Quality of Life-Bronchiectasis.