Table 3

Proportional Hazards Model: Multivariate hazard ratios of associations between characteristics collected during childhood and later teenage pregnancy

Parameter

Hazard Ratio

95% CI

p value

Family type

Original

1.00 (ref)

Sole-parent

1.10

0.69 - 1.76

0.6934

Step/blended

2.19

1.41 - 3.40

<0.001

CBCL score (child) - Aggressive and

Delinquent

Neither

1.00 (ref)

Aggressive and Delinquent

3.52

1.90 - 6.55

<0.001

Aggressive or Delinquent

1.24

0.71 - 2.14

0.448

Combined carer income

High

1.00 (ref)

Medium

0.93

0.55 - 1.58

0.794

Low

1.72

1.01 - 2.92

0.045

Highest school year completed by primary carer

Year 10 or higher

1.00 (ref)

Year 9 or lower

1.71

1.14 - 2.57

0.009

Region

Metropolitan

1.00 (ref)

Non-Metropolitan

1.52

1.09 - 2.11

0.014

Whether primary carer was a smoker

No

1.00 (ref)

Yes

1.63

1.14 - 2.31

0.007

Gaudie et al. BMC Public Health 2010 10:63   doi:10.1186/1471-2458-10-63