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If comparison is the keystone of all scientific investigation, it is nowhere more important than in epidemiology. The differences in cardiovascular disease experience in different parts of the world have already yielded many new insights concerning the possible determinants of this most important of all causes of mortality and morbidity. However, comparisons between separately conducted studies have always been sufficiently problematical to have impaired the full potential value of many investigations. In recent years, the World Health Organization has several times addessed itself to the problem of the minimal degree of standardization of technical procedures and data-reporting that will permit
Cardiovascular Survey Methods.. Ann Intern Med. 1968;69:1335–1336. doi: 10.7326/0003-4819-69-6-1335_2
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Published: Ann Intern Med. 1968;69(6):1335-1336.
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Print ISSN: 0003-4819 | Online ISSN: 1539-3704
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