Hospital- and patient-related factors associated with differences in hospital antibiotic use: analysis of national surveillance results

Table 2 Description of three categorical variables ^a entered into 12 linear regression models

Variables (No. of data points)	% of beds	% of bed days	% of discharges	Average HE stay (d)
University HEs^b (30)	40.6	40.7	38.5	4.9
Non-university HEs (102)	59.4	59.3	61.5	4.5
Health Region 1 (60)	54.0	54.2	55.5	4.5
Health Region 2 (30)	20.3	20.8	20.5	4.7
Health Region 3 (18)	14.3	14.5	13.8	4.8
Health Region 4 (24)	11.4	10.4	10.2	4.7
HEs < 300 beds (35)	9.0	8.6	8.3	4.8
HEs 300–600 beds (50)	31.0	31.7	33.3	4.4
HEs > 600 beds (47)	60.0	59.7	58.5	4.7

132 data points (22 HEs^b over 6 years) for each independent variable.
^aOf the three categorical variables, only university affiliation was independently associated with antibiotic use in eight of the 12 regression models.
^bHE = Health Enterprise.

ISSN: 2047-2994