Table 3 Unadjusted and adjusted Poisson regression models for the number of avoidable admissions calculated for each financial year of the study period (2005/06–2013/14) by Aboriginal status and explanatory factors (n = 19,025)

Aboriginal status

 Non-Aboriginal

ref.

ref.

ref.

 Aboriginal

1.15 (1.12, 1.18)

1.16 (1.13, 1.20)

1.15 (1.11, 1.20)

Financial year

 2005–06

ref.

ref.

ref.

 2006–07

1.00 (0.94, 1.05)

1.00 (0.94, 1.05)

1.00 (0.93, 1.05)

 2007–08

0.96 (0.91, 1.01)

0.96 (0.91, 1.01)

0.94 (0.89, 1.00)

 2008–09

0.97 (0.92, 1.03)

0.97 (0.92, 1.02)

0.95 (0.90, 1.01)

 2009–10

0.96 (0.91, 1.01)

0.97 (0.92, 1.02)

0.94 (0.88, 0.99)

 2010–11

0.96 (0.91, 1.02)

0.96 (0.91, 1.01)

0.95 (0.89, 1.00)

 2011–12

0.98 (0.93, 1.03)

0.97 (0.92, 1.02)

0.96 (0.91, 1.02)

 2012–13

0.99 (0.94, 1.04)

0.98 (0.93, 1.03)

0.97 (0.92, 1.03)

 2013–14

0.98 (0.93, 1.04)

0.97 (0.93, 1.03)

0.96 (0.90, 1.01)

 Male

–

ref.

ref.

  Female

–

1.00 (0.97, 1.02)

1.02 (0.99, 1.04)

Age

–

1.00 (1.00, 1.00)

1.00 (1.00, 1.01)

 Married

–

ref.

ref.

 Single

–

1.06 (1.03, 1.10)

1.09 (1.05, 1.12)

 Widowed

–

1.04 (1.00, 1.08)

1.09 (1.04, 1.14)

 Divorced/separated

–

1.09 (1.05, 1.13)

1.09 (1.04, 1.13)

 Not known

–

0.98 (0.89, 1.09)

0.99 (0.88, 1.11)

 1st quintile – most disadvantaged

–

ref.

ref.

 2nd quintile

–

0.98 (0.95, 1.02)

0.99 (0.96, 1.03)

 3rd quintile

–

0.99 (0.95, 1.03)

0.99 (0.95, 1.04)

 4th quintile

–

0.97 (0.93, 1.01)

0.99 (0.94, 1.04)

 5th quintile – least disadvantaged

–

0.92 (0.87, 0.97)

0.88 (0.82, 0.95)

 Highly Accessible

–

ref.

ref.

 Accessible

–

0.97 (0.94, 1.00)

0.96 (0.93, 0.99)

 Moderately Accessible

–

0.98 (0.94, 1.02)

0.95 (0.91, 0.99)

 Remote / Very Remote

–

1.02 (0.97, 1.08)

1.00 (0.95, 1.06)