RESUMEN
Objective To establish the re-examination criteria of the Sysmex XN-9000 automatic blood cell analyzer pipeline suitable for this laboratory for ensuring the accuracy of detection results .Methods A total of 2250 whole blood samples were se-lected from inpatients ,outpatients and subjects undergoing physical examination .The Sysmex XN-9000 blood cell analyzer was a-dopted to conduct the detection .With the manual microscopic examination as the golden standard ,26 items of re-examination criteria were performed the verification and evaluation .The positive predicting value ,negative predicting value ,false positive rate ,false neg-ative rate and re-examination rate were performed by the statistics .Results In compariing the instrument alarm information with the microscopic examination results ,the positive predicting value was 91 .59% ,the negative predicting value was 98 .64% ,the false positive rate was 2 .09% ,the false negative rate was 1 .02% and the re-examination rate was 24 .84% .Conclusion The formulated re-examination criteria of the Sysmex XN-9000 blood cell analyzer is in accord with the characteristics of our laboratory ,which in-creases the detection efficiency ,prevents the missing detection and false detection and has clinical guidance significance .
RESUMEN
Objective To establish the examination criteria for the prosthodontic clinical practice using Delphi method,to improve the evaluation level of clinical practice of dental students.Method 15 clinical experts in the department of prosthodontics,Peking University School of Stomatology were selected in this study.The evaluation indicators system of prosthodontic clinical practice was established by two rounds of investigations by Delphi method.Initiative ratio and authority coefficient (Cr) of the experts were used to evaluate the reliability of the new examination criteria.Next,the eight-year program students in class of 2007 (38 students) and 2008 (34 students) were examined by old and new examination criteria respectively and the feedback of the students were collected by the method of questionnaire.SPSS 16.0 was used for data processing.Results In this study,the initiative and the authority of the experts was very high,and the initiative ratio and authority coefficient were 100％ and 0.860 respectively.A new examination criterion of prosthodontic clinical practice was established,including 3 first-level indicators,9 second-level indicators and 19 third-level indicators.Questionnaire analysis revealed that only 12％ (n=4) and 9％ (n=3)of the students in class of 2008 considered the new examination criteria was not comprehensive enough or objective enough,which was obviously less than the students in class of 2007 [45％ (n=17) and 36％ (n=14)].Conclusion A new examination criterion of prosthodontic clinical practice was successfully established by Delphi method.The new examination criterion is more comprehensive and objective than the old one and can promote the educational quality of clinical practice of dental students.The method of this study also provides reference for the educational reform of clinical practice in other fields.