TY - JOUR
T1 - A study of various estimators for the derivation of quality control procedures from patient erythrocyte indices
AU - Bull, B. S.
AU - Elashoff, R. M.
AU - Heilbron, D. C.
AU - Couperus, J.
N1 - Abstract. The derivation of quality control data from patient laboratory values presupposes, first, that the distribution of those values is stable over long p
PY - 1974/4
Y1 - 1974/4
N2 - The derivation of quality control data from patient laboratory values presupposes, first, that the distribution of those values is stable over long periods of time; second, that it is possible to estimate accurately the mean of the entire population from a small sample of that population. That the first presupposition is true for erythrocyte indices has been shown elsewhere. The second presupposition is examined in this paper. Six estimators were tried in turn on two data batches, each consisting of 480 patients from two university hospitals. An estimator which smoothed the data (decreased the effect of outlying values) and at the same time showed the characteristics of a moving average was found sufficiently effective to serve as the major basis for quality control of an automated whole blood analyzer.
AB - The derivation of quality control data from patient laboratory values presupposes, first, that the distribution of those values is stable over long periods of time; second, that it is possible to estimate accurately the mean of the entire population from a small sample of that population. That the first presupposition is true for erythrocyte indices has been shown elsewhere. The second presupposition is examined in this paper. Six estimators were tried in turn on two data batches, each consisting of 480 patients from two university hospitals. An estimator which smoothed the data (decreased the effect of outlying values) and at the same time showed the characteristics of a moving average was found sufficiently effective to serve as the major basis for quality control of an automated whole blood analyzer.
UR - https://www.scopus.com/pages/publications/0016147031
UR - https://www.scopus.com/pages/publications/0016147031#tab=citedBy
U2 - 10.1093/ajcp/61.4.473
DO - 10.1093/ajcp/61.4.473
M3 - Article
C2 - 4816793
SN - 0002-9173
VL - 61
SP - 473
EP - 481
JO - American Journal of Clinical Pathology
JF - American Journal of Clinical Pathology
IS - 4
ER -