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- W175300674 abstract "Periodic complete blood counts are not recommended for disease prevention in low-risk, non-pregnant adults. Consequently, there are few follow-up studies of the prevalence of incidentally detected anemia in asymptomatic subjects and its significance for their well-being. The objective of this survey is to determine the frequency of anemia and its predictive value for disease over a 15-yr annual follow-up of a cohort of asymptomatic young males, selected for physical fitness and intelligence.One thousand Israeli airmen aged 18-30 yr at entry into this historical-prospective study in 1968 were used as subjects. Hematocrit (Hct) levels were examined annually. On the average each subject had 13.2 tests in the course of the 15 yr follow-up. We arbitrarily defined anemia as a Hct of 40% or less on two or more tests, and compared the prevalence of diagnosed disorders in subjects with and without anemia.During follow-up, anemia was found in 125 (12.5%) of the subjects. On successive annual examinations of the same individual Hct levels varied by 3% or more in 3.5% of those without anemia, and in 10.5% of those with anemia. The frequency of diagnosed disorders, excluding inter-current infections and trauma, was 25.6%, and 10.9% among those with and without anemia, respectively (OR = 2.8, 95% CI 1.8-4.6). Anemia was associated with inflammatory bowel disease (OR = 12.1, 95% CI 2.3 78.6) and malignancy (OR = 3.6, 95% CI 1.1-10.7). It preceded diagnosis only in one case with Waldenstr 246 m's macroglobulinemia, in one case of inflammatory bowel disease and two cases of myocardial infarction.A finding of anemia doubled the likelihood of chronic disease. However, it had a limited predictive value for subsequent morbidity and did not lead to detection of treatable disorders or to disorders that might otherwise have endangered flight safety. Fluctuations of up to 3% in Hct over time may be viewed as normal in young males." @default.
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- W175300674 date "1999-10-01" @default.
- W175300674 modified "2023-10-14" @default.
- W175300674 title "Significance of low hematocrit levels in asymptomatic young adults: results of 15 years follow-up." @default.
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