Comparative precision of laboratory methods
1987
Comparative Precision of Laboratory Methods
Sample size: 21
publication
Evidence: moderate
Author Information
Author(s): K. F. Yee
Primary Institution: Syntex Research Centre, Heriot-Watt University
Hypothesis
The study aims to compare the precision of two laboratory methods for measuring sodium levels using the same samples.
Conclusion
The flame photometry method was found to be more precise than the Astra method.
Supporting Evidence
- The flame photometry method showed a higher precision compared to the Astra method.
- The correlation coefficient between the two methods was 0.9844.
- Using the F-test would have incorrectly suggested that both methods were equally precise.
Takeaway
This study looked at two ways to measure sodium in blood samples and found that one method was better at giving consistent results.
Methodology
The study used Pitman's test to compare the precision of two quantitative methods on the same samples.
Statistical Information
P-Value
<0.008
Statistical Significance
p<0.008
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