Quality control using the daily mean
| ISSN: |
0009-8981
|
|---|---|
| Source: |
Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
|
| Topics: |
Medicine
|
| Type of Medium: |
Electronic Resource
|
| URL: |
| _version_ | 1798292411615543296 |
|---|---|
| autor | Dixon, K. Northam, B.E. |
| autorsonst | Dixon, K. Northam, B.E. |
| book_url | http://linkinghub.elsevier.com/retrieve/pii/0009-8981(70)90139-7 |
| datenlieferant | nat_lic_papers |
| fussnote | The value of the daily mean as a quality control statistic has been examined in a system of multiple clinical biochemical analysis using conventional Auto Analyzers. The analyses studied were serum sodium, potassium, urea, total protein, albumin, calcium, alkaline phosphatase, bilirubin and aspartate aminotransferase.Several factors contributed to minimising variation in the daily mean, (1) Consistently large numbers of analyses were carried out each day (mean number 85, range 50 to 140). (2) A substantial proportion of the results were within the normal range. (3) Suitable truncation limits were chosen to exclude the disproportionate effect of unusual values. (4) The daily mean was weighted to correct for fluctuations in the proportion of inpatients and outpatients. This was particularly important for albumin, total protein and calcium.The usefulness of the daily mean for detecting changes in accuracy has been compared with that of conventional quality control serum. In our laboratory the daily mean was the more powerful tool for sodium, albumin and calcium; equally powerful for total protein, potassium, alkaline phosphatase and bilirubin; and less powerful for urea and aspartate aminotransferase |
| hauptsatz | hsatz_simple |
| identnr | NLZ186139438 |
| issn | 0009-8981 |
| journal_name | Clinica Chimica Acta |
| materialart | 1 |
| package_name | Elsevier |
| publikationsort | Amsterdam |
| publisher | Elsevier |
| reference | 30 (1970), S. 453-461 |
| search_space | articles |
| shingle_author_1 | Dixon, K. Northam, B.E. |
| shingle_author_2 | Dixon, K. Northam, B.E. |
| shingle_author_3 | Dixon, K. Northam, B.E. |
| shingle_author_4 | Dixon, K. Northam, B.E. |
| shingle_catch_all_1 | Dixon, K. Northam, B.E. Quality control using the daily mean 0009-8981 00098981 Elsevier |
| shingle_catch_all_2 | Dixon, K. Northam, B.E. Quality control using the daily mean 0009-8981 00098981 Elsevier |
| shingle_catch_all_3 | Dixon, K. Northam, B.E. Quality control using the daily mean 0009-8981 00098981 Elsevier |
| shingle_catch_all_4 | Dixon, K. Northam, B.E. Quality control using the daily mean 0009-8981 00098981 Elsevier |
| shingle_title_1 | Quality control using the daily mean |
| shingle_title_2 | Quality control using the daily mean |
| shingle_title_3 | Quality control using the daily mean |
| shingle_title_4 | Quality control using the daily mean |
| sigel_instance_filter | dkfz geomar wilbert ipn albert fhp |
| source_archive | Elsevier Journal Backfiles on ScienceDirect 1907 - 2002 |
| timestamp | 2024-05-06T08:48:06.225Z |
| titel | Quality control using the daily mean |
| titel_suche | Quality control using the daily mean The value of the daily mean as a quality control statistic has been examined in a system of multiple clinical biochemical analysis using conventional Auto Analyzers. The analyses studied were serum sodium, potassium, urea, total protein, albumin, calcium, alkaline phosphatase, bilirubin and aspartate aminotransferase.Several factors contributed to minimising variation in the daily mean, (1) Consistently large numbers of analyses were carried out each day (mean number 85, range 50 to 140). (2) A substantial proportion of the results were within the normal range. (3) Suitable truncation limits were chosen to exclude the disproportionate effect of unusual values. (4) The daily mean was weighted to correct for fluctuations in the proportion of inpatients and outpatients. This was particularly important for albumin, total protein and calcium.The usefulness of the daily mean for detecting changes in accuracy has been compared with that of conventional quality control serum. In our laboratory the daily mean was the more powerful tool for sodium, albumin and calcium; equally powerful for total protein, potassium, alkaline phosphatase and bilirubin; and less powerful for urea and aspartate aminotransferase |
| topic | WW-YZ |
| uid | nat_lic_papers_NLZ186139438 |