Table 6 Multinomial logistic regression of class memberships on covariates of health risk exposures of mothers during pregnancy or in the year of childbirth^a

 Yes

2.50 (1.42–4.39)

0.002

1.7 (0.91–3.18)

0.093

3.31 (2.07–5.30)

< 0.001

  Yes

1.03 (0.69–1.54)

0.872

1.23 (0.84–1.8)

0.297

1.72 (1.23–2.42)

0.002

  Good health

0.93 (0.63–1.38)

0.73

1.45 (1–2.09)

0.051

1.26 (0.88–1.8)

0.208

  Fair/Poor health

1.53 (0.81–2.89)

0.190

1.22 (0.63–2.36)

0.561

1.7 (0.96–3.01)

0.069

  Underweight

0.91 (0.5–1.65)

0.750

1.21 (0.69–2.12)

0.495

0.96 (0.55–1.69)

0.885

  Overweight

1.41 (0.94–2.1)

0.094

1.09 (0.72–1.66)

0.688

1.23 (0.83–1.81)

0.301

  Obese

1.1 (0.66–1.82)

0.724

1.07 (0.65–1.75)

0.803

1.19 (0.75–1.89)

0.462

  Low birth weight (< 2500 g)

1.42 (0.61–3.3)

0.410

0.86 (0.34–2.19)

0.754

1.91 (0.87–4.18)

0.106

  High birth weight (> = 4000 g)

1.41 (0.92–2.16)

0.110

1.23 (0.79–1.94)

0.361

0.87 (0.55–1.38)

0.553

  Pre-term birth (< 37 weeks)

1.22 (0.56–2.65)

0.613

1.29 (0.58–2.87)

0.534

0.87 (0.4–1.88)

0.715

  Late birth (> = 42 weeks)

0.73 (0.3–1.77)

0.493

1.07 (0.5–2.27)

0.859

1.34 (0.69–2.59)

0.385

  Occasional / <  10 cigarettes per day

0.35 (0.14–0.93)

0.035

0.87 (0.44–1.72)

0.699

1.28 (0.72–2.27)

0.403

  10+ cigarettes per day

1.04 (0.43–2.57)

0.924

1.33 (0.58–3.04)

0.496

1.34 (0.63–2.86)

0.449