Table 4 Hazard ratios and 95 % CI of prescription stimulant medication in Aboriginal children and adolescents

Mothers’ age group in years at birth

<20

0.70(0.47–10.4)

0.08

0.69(0.45–1.07)

0.10

20–24

1.10(0.80–1.50)

0.56

1.20(0.85–1.69)

0.29

25–29

1.0

1.0

30–34

1.06(0.72–1.57)

0.78

1.30(0.86–1.96)

0.22

35–39

0.98(0.54–1.77)

0.94

1.25(0.68–2.28)

0.48

≥40

0.46(0.06–3.33)

0.44

0.60(0.08–4.33)

0.61

Sex

Female

1.0

1.0

Male

4.51(3.27–6.23)

<0.001

4.08(2.92–5.69)

<0.001

Geographical remoteness

Metropolitan

1.0

1.0

Rural

0.83(0.61–1.13)

0.23

0.82(0.60–1.12)

0.20

Remote

0.39(0.27–0.58)

<0.001

0.38(0.26–0.56)

<0.001

Socioeconomic disadvantage

Least disadvantaged

1.0

1.0

Less disadvantaged

1.05(0.68–1.63)

0.82

1.15(0.74–1.78)

0.53

Little disadvantaged

1.25(0.78–1.99)

0.35

1.29(0.81–2.05)

0.29

More disadvantaged

1.10(0.65–1.88)

0.71

1.26(0.74–2.16)

0.39

Most disadvantaged

1.14(0.76–1.72)

0.53

1.40(0.92–2.12)

0.12