Skip to main content

Table 4 Preconception light and vigorous past-year leisure-time physical activity and early and late preterm delivery

From: Preconception leisure-time physical activity and family history of stroke and myocardial infarction associate with preterm delivery: findings from a Norwegian cohort

Past-year

Early Preterm (< 34 weeks), n = 209

Late Preterm (34–36 weeks), n = 509

OR (95% CI)a

OR (95% CI)a

OR (95% CI)a

OR (95% CI)a

OR (95% CI)a

OR (95% CI)a

 

Model 1b

Model 2c

Model 3d

Model 1b

Model 2c

Model 3d

Light LTPA

 <  3 h/week

1.0

1.0

1.0

1.0

1.0

1.0

 > 3 h/week

0.80 (0.60–1.07)

0.94 (0.70–1.27)

0.79 (0.57–1.09)

0.91 (0.75–1.11)

0.94 (0.76–1.16)

0.89 (0.71–1.11)

Vigorous LTPA

 None

1.0

1.0

1.0

1.0

1.0

1.0

 1–2 h/week

0.91 (0.64–1.28)

1.06 (0.74–1.51)

1.15 (0.78–1.70)

0.96 (0.77–1.20)

1.02 (0.81–1.29)

1.02 (0.80–1.30)

 > 3 h/week

1.21 (0.81–1.80)

1.52 (1.01–2.30)

1.92 (1.24–2.97)

0.95 (0.72–1.25)

1.04 (0.77–1.39)

1.11 (0.81–1.51)

  1. CI Confidence intervals, LTPA Leisure-time physical activity, OR Odds ratio
  2. aMlogit models; mothers’ pseudo-ID entered as cluster variable.
  3. bModel 1 includes Cohort Norway baseline age and time to delivery, and parity risk (nulliparous, prior preterm among parous, and parous without prior preterm delivery).
  4. cModel 2 includes model 1 covariates, and height (cm), body mass index (kg/m2) status (underweight: < 18.5; normal/overweight: 18.5–29.9, and obese), daily cigarette smoking (yes vs. no), educational level (primary, high school/vocational school, any college/university).
  5. dModel 3 includes model 2 covariates and simultaneously light and vigorous leisure-time physical activity
Back to article page

BMC Pregnancy and Childbirth

ISSN: 1471-2393

Contact us