Factors¹ independently associated with having coded influenza² in any diagnosis on the admission record among persons with an any-cause hospital admission and a virological notification, New South Wales, 2005 to 2008.

Notes: 1.Statistically significant results are shown in bold. 2.Coded influenza in the admission database could include any of ICD-10 codes J09-J11. 3.Includes coded influenza in any of the available diagnosis fields on the admission record. 4.Of 1451 records, 37 (3%) records without an influenza type A or B result or for prison or non-NSW residents were excluded from the analysis. 5.Each variable was adjusted for all other variables in the table using logistic regression.