The repeatability of discrete and continuous anterior segment grading scales.
Optom Vis Sci
; 77(5): 244-51, 2000 May.
Article
en En
| MEDLINE
| ID: mdl-10831214
ABSTRACT
PURPOSE:
To investigate the repeatability of three anterior segment clinical grading scales 1) verbal descriptors scale (VDS), 2) photographic matching scale (PS), and 3) continuous matching scale (CS).METHODS:
Five optometrists graded 30 slides each of 3-9-o'clock staining, bulbar redness, and palpebral conjunctival roughness twice, separated by at least a day. VDS and PS were five-point scales (0-4) with half grades permitted. The CS was a 5-second, 240-frame video movie generated using morphing software. PS and CS grading was done with references presented on a computer screen.RESULTS:
Averaged across observers, the test-retest intraclass correlation, correlation coefficient of concordance, and Pearson's r ranged from 0.95 to 0.99 (all p < 0.001). Coefficients of repeatability using CS to grade all three ocular conditions ranged between 0.31 and 0.49. The corresponding PS and VDS coefficients of repeatability ranged between 0.37 and 0.49; PS generally had better repeatability than VDS.CONCLUSIONS:
Each of the clinical grading scales was reliable. The coefficients of repeatability showed that bulbar redness and palpebral conjunctival roughness were graded with higher precision using CS.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Órbita
/
Conjuntiva
/
Enfermedades de la Conjuntiva
/
Hiperemia
/
Segmento Anterior del Ojo
Límite:
Humans
Idioma:
En
Revista:
Optom Vis Sci
Asunto de la revista:
OPTOMETRIA
Año:
2000
Tipo del documento:
Article
País de afiliación:
Canadá