How to avoid bias when comparing bone marrow transplantation with chemotherapy.

@article{Gray1991HowTA,
  title={How to avoid bias when comparing bone marrow transplantation with chemotherapy.},
  author={Roger H Gray and Keith Wheatley},
  journal={Bone marrow transplantation},
  year={1991},
  volume={7 Suppl 3},
  pages={9-12}
}
It is important to know whether the survival of patients receiving an allogeneic bone marrow transplant (BMT) is better than that of patients receiving "conventional" treatment and, if BMT is better, to know how much better. Unfortunately, this information is surprisingly difficult to obtain accurately. Most studies that have attempted to define the value of BMT have been subject to varying degrees of bias because of the problems of identifying a "conventional chemotherapy" control group with… CONTINUE READING