'n Epidemiologiese studie van perifere bloedondersoeke
Date
1979-08
Authors
Brink S.
Van Schalkwyk, D. J.
Journal Title
Journal ISSN
Volume Title
Publisher
HMPG
Abstract
A statistical random sample of 600 patients from the
population referred to Tygerberg Hospital for peripheral
blood investigations was analysed statistically with an
IBM 370/158 computer. Suitable transformations were
used for normalization of the data. The results of Coulter
Model S investigations, platelet counts (Coulter F), erythrocyte
sedimentation rates, differential counts (with
regard to neutrophil, Iymphocyte, monocyte and eosinophil
counts), age, race and sex of the patients, as well
as possible associations between the day of the week
and the haematological tests were investigated independently
for each of the four race and sex groups, i.e. White
men, White women, non-White men and non-White wo-
Ontvangsdatum: Februarie 1979.
men. Machine sorting was used to obtain graphs representing
the mean values of 12 haematological variables
versus age in the four race and sex groups. Regression
analysis between the different variables was done, and
mean values are reported. Normal haematological limits
(-+- 2 standard deviations) for the different age groups
were used, and with machine processing the results were
evaluated as low, normal or high in order to obtain a
table for the visualization of a normal or abnormal distribution,
skewness to the right or left, and percentages
of abnormal values for each variable for each of the
different age groups in the four race and sex groups. In
this study we investigated a selected group of patients.
No conclusions with regard to 'normal' values can be
made, but, with the use of statistical computing of routine
numerical data, an approach to epidemiology is demonstrated
Description
The original publication is available at http://www.samj.org.za
Keywords
Article, Epidemiology -- Statistical methods, Blood -- Diseases -- Diagnosis -- Statisical methods, Blood -- Abnormalities -- Diagnosis
Citation
Brink, S., Van Schalkwyk, D. J. 1979. 'n epidemiologiese studie van perifere bloedondersoeke. South African Medical Journal, 56: 250-255