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The Serum Vitamin B 12 Concentration in the General Population
Author(s) -
Kilpatrick G. S.,
Withey J. L.
Publication year - 1965
Publication title -
scandinavian journal of haematology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.904
H-Index - 84
eISSN - 1600-0609
pISSN - 0036-553X
DOI - 10.1111/j.1600-0609.1965.tb01299.x
Subject(s) - vitamin b12 , vitamin b , serum concentration , population , vitamin , zoology , demography , medicine , mathematics , biology , environmental health , sociology
The serum vitamin B 12 concentration was estimated in a random sample of two communities; an industrial and an agricultural one. A total of 890 people were studied. The frequency distribution of serum vitamin B 12 concentration shows that the range of values is wide and that the serum vitamin B 12 level falls with increasing age. For general purposes the results of this study may be summarised by standardising at age 50 years, using the regression coefficient — 1.254 μμg per ml per year of age, which summarises the gradient with age over the whole age range studied. Thus the adjusted means and standard errors, 255.2 ± 5.45 μμg per ml for the industrial men and 262 ± 10.06 μμg per ml for the women, compare closely with the agricultural community where the figures for the men are 260 ± 9.52 and for the women 272 ± 8.45 μμg per ml.