Table 9

Crude and adjusted associations of maternal and paternal height with offspring birth weight1
N Age-adjusted2 P for trend Add. adjusted3 95% CI P for trend Add. adjusted4 95% CI P for trend
Differences in z-score for birth weight
Maternal height(cm), by quintiles)
≤163 701 0 0 Ref 0 Ref
163-165 511 0.2 0.1 0.0,0.3 0.1 0.0,0.3
166-168 592 0.2 0.2 0.0,0.3 0.2 0.1,0.3
169-172 589 0.3 0.2 0.1,0.3 0.2 0.1,0.4
≥173 424 0.5 <0.0001 0.4 0.3,0.6 <0.0001 0.4 0.4,0.7 <0.0001
Paternal height (cm), by quintiles
≤ 175 668 0 0 Ref 0 Ref
176-178 518 0.2 0.1 0.0,0.3 0.1 0.0,0.3
179-181 525 0.2 0.1 0.0,0.3 0.2 0.0,0.3
182-185 582 0.3 0.2 0.1,0.3 0.2 0.1,0.4
≥186 524 0.4 <0.0001 0.3 0.1,0.4 <0.0001 0.3 0.2,0.4 <0.0001

1Birth weight assessed as differences in sex- and gestational age-adjusted z-scores for birth weight and estimated in 2798 offspring of parents participating in HUNT 2 1995-1997. 2Adjusted for parental age at HUNT. 3Additionally adjusted for maternal age at birth, duration between Hunt2 and delivery, education, parity, smoking, receiving social security benefits and partner`s height 4Additionally adjusted for maternal cardiovascular risk factors: prepregnancy and gestational hypertensive disease and, diabetes of the mother5 z-score for birth weight indicate the standard deviations of offspring’s birth weight above or below the expected mean birth weight for gestational age and sex. A mean difference of z score = 0.1corresponds to a difference of 46 grams if the infant is male and delivered at a gestational age of 40.0 weeks. Thus, at a gestational age of 40.0 weeks, the offspring birth weight of a male newborn differ by 184 grams between the tallest and shortest maternal height groups and by 138 grams between the tallest and shortest paternal height groups.

Birth weight assessed as differences in sex-and gestational age –adjusted z-scores for birth weight and estimated in 2798 offspring of parents participating in the HUNT Study 1995-1997.

Myklestad et al.

Myklestad et al. BMC Pregnancy and Childbirth 2013 13:33   doi:10.1186/1471-2393-13-33

Open Data