Exact(1)
The following information was collected prospectively: clinical history, age, body mass index (BMI in kg/m), blood pressure, gestational weight gain, method of conception, length of gestation, singleton or multiple gestation, pregnancy complications, mode of delivery, fetal growth, birth weight, Apgar score, and presence and type of fetal malformations, if any.
Similar(7)
After adjustment for the main covariates (study site and maternal age at delivery, body mass index, education, race/ethnicity, income, parity, folic acid use, smoking, and season of conception), bath length was not significantly associated with risk for any birth defect, although there was a suggestive association with risk for gastroschisis (adjusted OR: 1.2, 95% CI: 1.0-1.4 1.0-1.4
Women saw the acquisition of this skill as a factor in their conception of optimal length of postnatal hospital stay.
Regression analysis of 11 paired observations produced a negative (P < 0.001) association between gestation length and conception date (slope = − 0.31).
Previously, we identified a significant, negative relationship between gestation length and conception date in a small group of reindeer.
The negative relationship between conception date and gestation length enhanced calving synchrony, though the limits of gestation plasticity and underlying mechanisms are not clear.
Using the first pregnancy claim as the conception date, the mean length of pregnancy for the cohort was 6.55 months with at standard deviation of 1.64 months.
Telomere variability may be due to differences in telomere length at conception, telomerase activity during early development, rate of cell division and rate of telomere loss per cell division.
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