“…ED was classified as psychogenic ED (ICD-9-CM 302.74) and organic ED (ICD-9-CM 607.84). Comorbidities in this study included dementia (ICD-9-CM 290, 294.1-294.2, 331.0), schizophrenia (ICD-9-CM 295), anxiety (ICD-9-CM 300.0, 300.2-300.3, 308.3, 309.31), bipolar disorder (ICD-9-CM 296.0-296.1, 296.4-296.8), depression (ICD-9-CM 296.2-296.3, 300.1, 311), stroke (ICD-9-CM 430-438), coronary artery disease (CAD) (ICD-9-CM 410-414), chronic obstructive pulmonary disease (COPD) (ICD-9-CM 491-492, 496), chronic kidney disease (CKD) (ICD-9-CM 580-589), hypertension (ICD-9-CM 401-405), diabetes mellitus (DM) (ICD-9-CM 250), hyperlipidemia (ICD-9-CM 272), asthma (ICD-9-CM 493), alcohol-related illness (ICD-9-CM 291, 303, 305, 571.0-571.3, 790.3, V11.3), fracture (ICD-9-CM 800-829), dislocation (ICD-9-CM 830-839), sprains and strains (ICD-9-CM 840-849), open wound (ICD-9-CM 870-899), injury to blood vessels (ICD-9-CM 900-904), superficial injury/contusion (ICD-9-CM 910-92), crushing (ICD-9-CM 925-929), foreign body entering through orifice (ICD-9-CM 930-939), burns (ICD-9-CM 940-949), injury to nerves and spinal cord (ICD-9-CM 950-957), poisoning (ICD-9-CM 960-989), with the references to previous studies about ED ( Chao, Chen, Wang, Li, & Kao, 2015 ; Chen, Liang, Lin, Liao, & Kao, 2016 ; Kao et al, 2016 ; Wang, Chao, Lin, Tseng, & Kao, 2016 ; Wu et al, 2016 ) or TBI ( Chi et al, 2016 ; Wimo et al, 2016 ; Wu et al, 2017 ; Yang et al, 2016 ). This was a retrospective cohort study.…”