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Table 3 Comparison of stimulant medication in Aboriginal and non-Aboriginal children by metropolitan and non-metropolitan areas

From: Use of prescription stimulant for Attention Deficit Hyperactivity Disorder in Aboriginal children and adolescents: a linked data cohort study

Parameter Multivariate Analysis Multivariate Analysisa
Metro Non-Metro
HR (95 % CI) P-Value HR (95 % CI) P-Value
Parents Aboriginal status Non-Aboriginal parents 1.0   1.0  
Both parents Aboriginal 0.35(0.25–0.49) <0.001 0.28(0.20–0.38) <0.001
Only father Aboriginal 0.96(0.73–1.26) 0.76 0.8(0.55–1.17) 0.26
Only mother Aboriginal 0.68(0.48–0.95) 0.03 0.66(0.44–1.0) 0.051
Mothers’ age group in years at birth <20 1.51(1.28–1.78) <0.001 1.56(1.24–1.97) <0.001
20–24 1.48(1.33–1.66) <0.001 1.30(1.10–1.53) 0.002
25–29 1.0   1.0  
30–34 0.89(0.79–1.00) 0.04 0.85(0.71–1.01) 0.07
35–39 0.85(0.73–1.00) 0.57 1.06(0.82–1.35) 0.67
≥40 0.78(0.52–1.16) 0.22 1.00(0.55–1.82) 0.99
Sex Female 1.0   1.0  
Male 3.69(3.33–4.09) <0.001 4.24(3.61–4.99) <0.001
Socioeconomic disadvantage Least disadvantaged 1.0   1.0  
Less disadvantaged 1.19(1.07–1.33) <0.001 1.15(0.98–1.35) 0.10
Little disadvantaged 1.33(1.16–1.53) <0.001 1.28(1.04–1.58) 0.02
More disadvantaged 1.4(1.16–1.69) <0.001 1.13(0.85–1.49) 0.41
Most disadvantaged 2.17(1.89–2.49) <0.001 1.80(1.49–2.17) <0.001
  1. aAll parameters were included in the regression model so as to adjust each result for potential confounding by all other covariates