1Levey S,Jennings ER.The use of control charts in the clinical laboratory[J].Am J Clin Pathol,1950,20(11):1059-1066.
2Henry RJ,SegaIove M.The running of standards in clinical chemistry and the use of the control chart[J].J Clin Path,1952,5:305-311.
3Ulstein H.Creating Levey-Jennings charts on a PC[J].MLO Med Lab Obs,1990,22(11):73-74,76.
4Westgard JO,Oryall JJ,Koch DD.Predicting effects of qualitycontrol practices on the cost-effective operation of a stable,multitest analyticaI system[J].Ann Clin Lab Sci,1990,36(10):1760-1764.
5Koch DD,Oryall JJ,Quam EF,et al.Selection of medically useful quality-control procedures for individual tests done in a multitest analytical system[J].Clin Chem,1990,36(2):230-233.
6Carrou TA,Pinnick HA,Carroll WE.Probability and the westgard rules D[J].Ann Clin Lab Sci,2003,33(1):113-114.
5Westgard J O,Groth T.A predictive value model for quality control:Effects of the prevalence of error on the performance of control procedures[J].Am J Clin Pathol,1983,80(1):49-56.
6Burnett R W,Westgard J O.Selection of measurement and control procedures to satisfy HCFA requirements and provide cost-effective operation[J].Arch Pathol Lab Med,1992,116:777-782.
7Neubauer A,Wolter C,Falkner C,et al.Optimizing the frequency and number of controls for automatic multichannel analyaers[J].Clin Chem,1998,44(5):1014-1023.
8NCCLS.Statistical Quality Control for Quantitative Measurements:Principles and Definitions;Apporoved Guideline-Second Edition.NCCLS Document C24-A2(ISBN 1-56238-371-X).1999.
9Westgard J O,Groth T.Power function for statistical control fules[J].Clin Chem,1979,25(6):863-869.
10Westgard J O,Groth T,Aronsson T,et al.Performance characteristics of rules for internal quality control: Probabilities for false rejection and error detection[J].Clin Chem,1977,23(10):1857-1867.