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. 2010 Aug 10;9:18. doi: 10.1186/1475-9276-9-18

Table 2.

Relative odds of current asthma by socioeconomic status variables for Indigenous and non-Indigenous Australians aged 18-64 years, 2004-05.*

Indigenous
Adjusted for age and sex
OR (95% CI)†
Adjusted for age, sex, main language and area of residence
OR (95% CI)†
Full model‡
OR (95% CI)†

Main language
 English 1.0 --- 1.0
 Not English 0.4 (0.3-0.6) --- 0.5 (0.3-0.8)
Highest year of school completed
 Year 10 or more 1.0 1.0 1.0
 Less than Year 10§ 1.0 (0.8-1.3) 1.1 (0.9-1.4) 1.0 (0.8-1.3)
Highest non-school qualification
 Bachelor/post-graduate degree 1.0 (0.5-1.9) 0.9 (0.5-1.6) 0.9 (0.4-1.7)
 Diploma 1.1 (0.7-2.0) 1.0 (0.6-1.7) 1.0 (0.5-1.8)
 Certificate 1.2 (0.9-1.6) 1.1 (0.9-1.5) 1.1 (0.8-1.6)
 No qualifications 1.0 1.0 1.0
Employment status
 Employed 1.0 1.0 1.0
 Unemployed 0.9 (0.6-1.5) 0.9 (0.6-1.5) 0.9 (0.5-1.5)
 Not in the labour force 1.0 (0.8-1.3) 1.1 (0.8-1.4) 1.0 (0.7-1.3)
Housing tenure
 Owner/purchaser 1.1 (0.8-1.5) 0.9 (0.7-1.2) 1.0 (0.7-1.3)
 Renter/other tenure 1.0 1.0 1.0
Ran out of food and couldn't afford to buy more (last 12 mos)
 Yes 1.2 (0.9-1.4) 1.3 (1.1-1.7) 1.3 (1.0-1.7)
 No 1.0 1.0 1.0
Equivalised household income quintile||
 1 (lowest) 0.7 (0.4-1.3) 0.8 (0.5-1.5) 0.7 (0.3-1.4)
 2 0.6 (0.3-1.1) 0.7 (0.4-1.3) 0.6 (0.3-1.2)
 3 0.7 (0.4-1.4) 0.8 (0.4-1.4) 0.7 (0.3-1.4)
 4 0.6 (0.3-1.3) 0.6 (0.3-1.3) 0.6 (0.3-1.3)
 5 (highest) 1.0 1.0 1.0
 Not known/not stated 0.6 (0.3-1.2) 0.8 (0.4-1.4) 0.7 (0.3-1.5)
SEIFA quintile††
 1 (most disadvantaged) 1.5 (0.4-6.3) 2.1 (0.5-9.3) 2.0 (0.5-8.2)
 2 1.8 (0.4-7.5) 2.1 (0.5-9.3) 2.0 (0.5-8.6)
 3 1.7 (0.4-7.4) 2.0 (0.5-9.2) 2.0 (0.5-8.4)
 4 1.6 (0.4-6.8) 1.8 (0.4-7.9) 1.8 (0.4-7.5)
 5 (least disadvantaged) 1.0 1.0 1.0
Area of residence
 Major cities 1.0 --- 1.0
 Inner regional 1.0 (0.7-1.4) --- 0.9 (0.7-1.3)
 Outer regional 0.8 (0.5-1.1) --- 0.8 (0.5-1.1)
 Remote or very remote 0.4 (0.3-0.6) --- 0.5 (0.3-0.7)

Non-Indigenous

Adjusted for age and sex OR (95% CI)† Adjusted for age, sex, main language and area of residence OR (95% CI)† Full model‡ OR (95% CI)†

Main language
 English 1.0 --- 1.0
 Not English 0.3 (0.2-0.4) --- 0.3 (0.2-0.4)
Highest year of school completed
 Year 10 or more 1.0 1.0 1.0
 Less than Year 10§ 1.2 (1.0-1.5) 1.3 (1.1-1.6) 1.2 (1.0-1.5)
Level of highest non-school qualification
 Bachelor/post-graduate degree 0.9 (0.8-1.1) 1.0 (0.8-1.1) 1.1 (0.9-1.3)
 Diploma 0.8 (0.6-1.1) 0.8 (0.7-1.1) 1.0 (0.7-1.2)
 Certificate 1.0 (0.8-1.2) 1.0 (0.8-1.1) 1.0 (0.9-1.2)
 No qualifications 1.0 1.0 1.0
Employment status
 Employed 1.0 1.0 1.0
 Unemployed 1.1 (0.7-1.6) 1.2 (0.8-1.7) 1.0 (0.6-1.5)
 Not in the labour force 1.3 (1.1-1.5) 1.4 (1.2-1.6) 1.3 (1.1-1.5)
Housing tenure
 Owner/purchaser --- --- ---
 Renter/other tenure --- --- ---
Ran out of food and couldn't afford to buy more in last 12 months
 Yes 1.8 (1.5-2.3) 1.8 (1.4-2.2) 1.5 (1.2-2.0)
 No 1.0 1.0 1.0
Equivalised household income quintile||
 1 (lowest) 1.3 (1.0-1.6) 1.4 (1.1-1.8) 1.2 (0.9-1.5)
 2 1.2 (0.9-1.5) 1.3 (1.0-1.6) 1.1 (0.9-1.5)
 3 0.9 (0.7-1.1) 1.0 (0.8-1.2) 0.9 (0.7-1.2)
 4 0.9 (0.8-1.1) 1.0 (0.8-1.2) 1.0 (0.8-1.2)
 5 (highest) 1.0 1.0 1.0
 Not known/not stated 0.8 (0.6-1.0) 0.8 (0.6-1.1) 0.8 (0.6-1.1)
SEIFA quintile††
 1 (most disadvantaged) 1.2 (0.9-1.5) 1.3 (1.0-1.7) 1.2 (0.9-1.5)
 2 1.2 (1.0-1.5) 1.2 (1.0-1.5) 1.1 (0.9-1.4)
 3 1.1 (0.9-1.3) 1.1 (0.9-1.3) 1.0 (0.8-1.3)
 4 1.2 (0.9-1.5) 1.1 (0.9-1.4) 1.1 (0.9-1.4)
 5 (least disadvantaged) 1.0 1.0 1.0
Area of residence
 Major cities 1.0 --- 1.0
 Inner regional 1.3 (1.1-1.5) --- 1.1 (1.0-1.3)
 Outer regional 1.1 (0.9-1.3) --- 0.9 (0.7-1.2)
 Remote or very remote --- --- ---

* Weighted data from the National Aboriginal and Torres Strait Islander Health Survey 2004-05 confidentialised unit record file (CURF) [14].

† OR, odds ratio; CI, confidence interval. Figures in bold are statistically significant at p < 0.05.

‡ Full model includes age group, sex and all other variables listed.

§ Includes those who never went to school.

|| Gross weekly equivalised cash income of household, using the OECD scale [15]. Quintiles are based on national figures.

** SEIFA, Socioeconomic Index for Areas, Index of Relative Disadvantage. Quintiles are based on national figures.