Total number of hospitalizations with wholly alcohol-attributable conditions among patients age 10 and older

Inclusions:
· Sex recorded as male or female
· Discharge from a general or psychiatric hospital, or a day surgery clinic.
The following codes were used to identify conditions wholly attributable to alcohol:

Outside Quebec
1. Inpatient and day surgery records:
i. ICD-10-CA codes for conditions 100% attributable to alcohol (or 100% alcohol-attributable fraction [AAF] codes) (see Appendix 1, ICD-10-CA codes) coded as diagnosis type (M), (1), (2), (W), (X), (Y) or (9) in the Discharge Abstract Database (DAD), or as Main Problem (MP) or Other Problem (OP) in the National Ambulatory Care Reporting System (NACRS); or
2. Records from the Ontario Mental Health Reporting System (OMHRS):
i. DSM-IV-TR and DSM-5 (ICD-9-CM version) 100% AAF codes (see Appendix 1, DSM-IV and DSM-5 codes) coded as a principal diagnosis or secondary diagnosis for inpatient records; or
ii. A category diagnosis of substance-related and addictive disorder coded as a principal diagnosis or secondary diagnosis and emergency department visit with 100% AAF codes in NACRS within 7 days prior to admission to an OMHRS bed (for patients without a DSM-IV-TR or DSM-5 (ICD-9-CM version) 100% AAF code and without another substance coded on the abstract)

In Quebec
1. Inpatient and day surgery records:
i. 100% AAF codes coded as type (M), (1), (2), (W), (X), (Y) or (9) in the Hospital Morbidity Database (HMDB); or
ii. 100% AAF codes (see Appendix 1, ICD-10-CA codes) coded as type (C) and ICD-10-CA codes for conditions partially attributable to alcohol (partial AAF codes) (Appendix 2) coded as diagnosis type (M) or (9)

Exclusions:
· Records with admission category of cadaveric donor or stillbirth (Admission Category Code = R or S).
· 2018–2019 data onward: Medical assistance in dying (MAID) (Discharge Disposition Code = 73)