Development of ATAQ-LAM: a tool to assess quality of life in Lymphangioleiomyomatosis

Table 2 Properties of four scales of ATAQ-LAM

Domain	alpha	Items	Mean correlation among items within the domain	Range possible	Range used	Mean ± SD^a	% at floor	% at ceiling
Exertional dyspnea	0.94	13	0.75	13-78	13-73	33.9 ± 15.1	4.7	0.0
Cough	0.91	6	0.77	6-36	6-29	13.8 ± 7.1	15.6	0.0
Fatigue	0.91	5	0.81	5-30	5-29	15.4 ± 7.1	6.3	0.0
Emotional	0.89	5	0.77	5-30	5-30	14.3 ± 7.2	10.9	4.7
Total	0.96	32		32-192	35-151	84.6 ± 34.1	0.0	0.0

ATAQ-LAM A Tool to Assess Quality of life in Lymphangioleiomyomatosis, Emotional Emotional Well-Being domain, alpha Cronbach’s coefficient alpha
^ahigher scores indicate greater impairment

ISSN: 1477-7525