Fig. 1From: Validity of a stroke severity index for administrative claims data research: a retrospective cohort studyFlow diagram of study procedure. Abbreviations: CMMC, Chi Mei Medical Center; ICD-9-CM, International Classification of Diseases, Ninth Revision, Clinical Modification; LH, Landseed Hospital; mRS, modified Rankin scale; NHIRD, National Health Insurance Research Database; NIHSS, National Institutes of Health Stroke ScaleBack to article page