Quality specifications for ordinal scale measurements with multiproperty (multiple) urine test strips.
Scand J Clin Lab Invest
; 59(7): 523-6, 1999 Nov.
Article
in En
| MEDLINE
| ID: mdl-10667691
ABSTRACT
Analytical quality specifications for ordinal scale measurements have not been presented so far. Criteria are suggested for multiproperty (multiple) urine test strips based on upper limits of healthy reference intervals, analytical performance and statistical tests applicable to ordinal scales. Trueness (accuracy) can be evaluated against an acceptable comparison method by applying sensitivity and specificity concepts, and defining a grey zone with a lower detection limit and an upper confirmation limit. Concordance (agreement) of two or more ordinal scale categories should be evaluated by subtracting random agreement, using Kappa statistics. Repeatability (precision) can be calculated for categorized results using binomial statistics.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Reagent Strips
/
Urinalysis
/
Clinical Laboratory Techniques
Type of study:
Diagnostic_studies
Limits:
Humans
Language:
En
Journal:
Scand J Clin Lab Invest
Year:
1999
Document type:
Article
Affiliation country:
Finland