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

From: 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

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