Assessment of health-related quality of life using the SF-36 in Chinese cervical spondylotic myelopathy patients after surgery and its consistency with neurological function assessment: a cohort study

Table 4 ES, Cronbach α, MCID, and ceiling and floor effects of PCS and MCS

Parameter	PCS	MCS
ES	0.84	0.81
MCID	5.52	3.43
Cronbach α	0.88	0.83
Lowest possible score (floor)	0	0
Highest possible score (ceiling)	0	0

ES: effect size; MCID: minimum clinically important difference; PCS: physical component score; MCS: mental component score.

ISSN: 1477-7525