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. 2022 Jan 17;12(1):e048397. doi: 10.1136/bmjopen-2020-048397

Table 2.

Extracted data amounts for housing status

Level of extraction Rows (n) Unique patients (n) Unique encounters (n) Social history entries (n/unique)
ED and admit notes 49 955 3233 15 664 21 876/21334
Housing, tobacco, alcohol information 6000 218 1995 2408/2211
Remove nulls/missing data Housing: 1785
Tobacco: 1108
Alcohol: 1220
Housing: 200
Tobacco: 179
Alcohol: 181
1361 1785/1684

ED, emergency department.