Biometric quality control process
Systems and methods configured to guide and manage laboratory analytical process control operations. A Biometric quality control (QC) process application is configured to monitor bias and imprecision for each test, characterize patient population data distributions and compare, contrast, and correlate changes in patient data distributions to any change in QC data populations. The Biometric QC process monitors the analytical process using data collected from repetitive testing of quality control materials and patient data (test results). The QC process identifies the optimal combination of, for example, frequency of QC testing, number of QCs tested, and QC rules applied in order to minimize the expected number of unacceptable patient results produced due to any out-of-control error condition that might occur.
1. A computer-implemented method of processing patient data for use in a patient-based biometric quality control process, comprising:
acquiring patient data from one or more laboratory instruments for a specific analyte, said patient data including a plurality of weeks worth of data;
determining an optimal percentage of the patient data to truncate for the analyte;
determining high and low truncation limits based on the patient data and the optimal percentage;
determining the mean and standard deviation of the patient data between the high and low truncation limits for each hour of the week represented by the patient data,
wherein determining truncation limits includes determining a first set of truncation limits that are equidistant from the median value of the un-truncated patient data, and determining a second set of truncation limits that maximize a decrease in the standard deviation of the patient data within the second truncation limits relative to the number of patient data values outside the second truncation limits; and
generating a system alert signal for patient data not within said second set of truncation limits.
2. The method of claim 1 , wherein the patient data includes values for a specific analyte.