. 2016 Apr 29;16:162. doi: 10.1186/s12913-016-1386-6

Table 2.

The pre-injury service items that are statistically associated with the post-injury hospital cost (in Australian Dollars)

Variable	Coefficient^c
Outcome Variable: Post-injury Hospital Cost^a
Five or more tests from Quantitation in serum, plasma, urine or other body fluid (MBS Item 66500)	$3799 [$2337, $5261]
Quantitation of glycosylated haemoglobin performed in the management of established diabetes (MBS Item 66551)	$10,406.52 [$5467, $15,346]
Outcome Variable: Post-injury Hospital Cost, Logged^b
Anaesthetist, pre-anaesthesia consultation (MBS Sub Group T6-1)	0.24 [0.13, 0.36]
Two tests from tests for hepatitis antigen or antibodies to determine immune status or viral carriage following exposure or vaccination to Hepatitis A, Hepatitis B, Hepatitis C or Hepatitis D (MBS Item 69475)	0.65 [0.37, 0.92]
Thyroid function tests (MBS Item 66719)	0.37 [0.06, 0.69]

^aThe coefficient indicates the average change in the category cost for every extra item used from the services listed based on a linear model. ^bThe coefficient indicates the average percentage change in the category cost for every extra item used from the services listed based on a nonlinear model. ^c[95 % confidence interval]