Applying Rasch analysis to evaluate measurement equivalence of different administration formats of the Activity Limitation scale of the Cambridge Pulmonary Hypertension Outcome Review (CAMPHOR)

Table 3 Individual Item Fit

Item	Location	SE	Fit residual	Chi²	Prob
Cut toenails	0.25	0.11	0.81	14.61	0.024
Bathe	2.02	0.14	−1.32	5.60	0.470
Get dressed	2.64	0.15	−0.35	7.02	0.319
Walk around house	2.52	0.15	−1.14	5.87	0.437
Walk short level distances	1.82	0.14	−1.43	4.49	0.611
Walk longer level distance	−0.37	0.11	−1.87	5.65	0.464
Walk up incline	−0.30	0.12	−2.15	10.39	0.109
Climb a flight of stairs	−1.18	0.11	−1.89	9.48	0.148
Bend to pick up objects	0.80	0.12	0.12	7.46	0.280
Stand for short time	2.20	0.15	0.51	4.23	0.646
Stand for long time	−0.76	0.11	−0.43	4.70	0.583
Lift heavy objects	−2.77	0.10	0.43	15.67	0.016
Carry heavy items	−3.42	0.11	−0.07	3.95	0.684
Do light house work	−0.10	0.11	−2.04	10.30	0.113
Do heavy housework	−3.33	0.11	−0.73	8.07	0.233

ISSN: 1477-7525