Reliability and validity of the Chinese version of the Short Musculoskeletal Function Assessment questionnaire in patients with skeletal muscle injury of the upper or lower extremities

Table 2 Descriptive statistics of the SMFA scores, internal consistency and floor and ceiling effects

SMFA	No. of items	Mean	SD	% floor	Cronbach’s α	Intraclass correlation
Arm and hand function	8	9.83	14.01	36.6	0.870	0.870
Mobility	9	25.50	21.53	14.2	0.925	0.925
Daily activities	10	25.81	24.03	6.48	0.928	0.928
Emotional status	7	23.38	13.43	4.42	0.776	0.776
Dysfunction index	34	21.47	16.17	6.19	0.954	0.954
Bother index	12	23.43	18.21	8.85	0.935	0.935

ISSN: 1471-2474