STEVEN A. SCHROEDER, M.D., F.A.C.P.; JONATHAN A. SHOWSTACK, M.P.H.
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To the editor: The paper by Sheeley and Sherman in the November issue (Ann Intern Med 85:648-652, 1976) is an important examination of the role of diagnostic and therapeutic resources in the rise of hospital costs. However, the authors' methods contain certain biases that may partially invalidate their conclusions.
First, they restrict their analysis to patients with pneumonia who are not in the intensive care unit (ICU). They do not supply data, however, on the relative use of ICUs in the four hospitals during the 10-year study period. An alternative explanation for their results is that the decreased length of
SCHROEDER SA, SHOWSTACK JA. Hospital Costs. Ann Intern Med. 1977;86:360–361. doi: https://doi.org/10.7326/0003-4819-86-3-360
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Published: Ann Intern Med. 1977;86(3):360-361.
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