Estimating bias from loss to follow-up in the Danish National Birth Cohort.

@article{Greene2011EstimatingBF,
  title={Estimating bias from loss to follow-up in the Danish National Birth Cohort.},
  author={Naomi H Greene and Sander Greenland and J\orn Olsen and Ellen A Nohr},
  journal={Epidemiology},
  year={2011},
  volume={22 6},
  pages={815-22}
}
Loss to follow-up in cohort studies may result in biased association estimates. Of 61,895 women entering the Danish National Birth Cohort and completing the first data-collection phase, 37,178 (60%) opted to be in the 7-year follow-up. Using national registry data to obtain end point information on all members of the cohort, we estimated associations in the baseline and the 7-year follow-up participant populations for 5 exposure-outcome associations: (a) size at birth and childhood asthma, (b… CONTINUE READING
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