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Quality assessment in cervical cytology: a pilot study.
G D Thomas1, C Head, J Thorogood
1Department of Pathology, Royal Halifax Infirmary.
Journal of Clinical Pathology
|February 1, 1988
Summary
This pilot study assessed an external quality assessment scheme for laboratories. Results showed moderate interlaboratory agreement, indicating room for improvement in diagnostic accuracy.
Area of Science:
- Medical Laboratory Science
- Quality Assurance in Healthcare
- Diagnostic Accuracy
Background:
- External Quality Assessment (EQA) schemes are crucial for maintaining laboratory standards.
- Implementing EQA from a district general hospital setting requires evaluation.
- Computerized organization and statistical analysis are key components of modern EQA.
Purpose of the Study:
- To evaluate the feasibility of establishing an EQA scheme from a district general hospital.
- To estimate the time and resources needed for organizing and running a computerized EQA scheme.
- To generate robust statistical data for comparison with future EQA initiatives.
Main Methods:
- A pilot EQA scheme was conducted from February 1985 to September 1986.
- Seven laboratories participated, each submitting 20 smears.
- Smears were circulated in three rounds using a prearranged order for analysis.
Main Results:
- The kappa statistic indicated moderate levels of interlaboratory agreement.
- Complete agreement among participating laboratories was achieved in a small proportion of cases.
- The feasibility and time requirements for the scheme were assessed.
Conclusions:
- Running an EQA scheme from a district general hospital is feasible.
- Computerized organization is efficient for EQA management.
- Further development is needed to enhance interlaboratory agreement in diagnostic assessments.