Table 3.

Aboriginal to non-Aboriginal admission rate ratios from multilevel models for potentially avoidable, ambulatory care sensitive and non-avoidable hospitalisations (July 2000 to December 2013) in a population cohort of children born between July 2000 and December 2012 in New South Wales, Australia

Model	Variables and random effects added to the model:	Aboriginal to non-Aboriginal Rate Ratio	95 % confidence interval
Potentially avoidable hospitalisations
1	Age and sex	1.73	1.71	1.75
2	Model 1 + random intercept for area	1.60	1.58	1.62
3	Model 2 + individuala- and areab-level characteristics	1.60	1.58	1.61
Ambulatory care sensitive hospitalisations
1	Age and sex	1.74	1.72	1.77
2	Model 1 + random intercept for area	1.60	1.58	1.62
3	Model 2 + individuala- and areab-level characteristics	1.57	1.55	1.59
Non-avoidable hospitalisations
1	Age and sex	0.89	0.81	0.97
2	Model 1 + random intercept for area	0.90	0.82	0.97
3	Model 2 + individuala- and areab-level characteristics	1.03	0.96	1.10

^aLow birth weight/prematurity and private health insurance/patient status; ^bgeographical remoteness and area socio-economic disadvantage