The effect of non-response on estimates of health care utilisation: linking health surveys and registers.

@article{Gundgaard2008TheEO,
  title={The effect of non-response on estimates of health care utilisation: linking health surveys and registers.},
  author={Jens Gundgaard and Ola Ekholm and Ebba Holme Hansen and Niels Kr. Rasmussen},
  journal={European journal of public health},
  year={2008},
  volume={18 2},
  pages={
          189-94
        }
}
BACKGROUND Non-response in health surveys may lead to bias in estimates of health care utilisation. The magnitude, direction and composition of the bias are usually not well known. When data from health surveys are merged with data from registers at the individual level, analyses can reveal non-response bias. Our aim was to estimate the composition, direction and magnitude of non-response bias in the estimation of health care costs in two types of health interview surveys. METHODS The surveys… 
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