Test-retest Reliability of the qReading Method in Normally Sighted Young Adults

Area of Science:

• Ophthalmology
• Neuroscience
• Biostatistics

Background:

• Reading function assessment is crucial for diagnosing visual impairments and evaluating treatment efficacy.
• Existing methods may lack efficiency or reliability for longitudinal studies.
• A novel Bayesian adaptive method, qReading, was developed to address these limitations.

Purpose of the Study:

• To systematically assess the test-retest reliability of the qReading method.
• To evaluate the precision and repeatability of reading function measurements using qReading.
• To determine the suitability of qReading for clinical applications in normally sighted young adults.

Main Methods:

• Five repeated measurements of reading curves were obtained within and between sessions.
• Two observer subpopulations (naive and experienced) were studied.
• Reliability was assessed using standard deviation, Bland-Altman coefficient, correlation coefficient, and Fractional Rank Precision, alongside intrinsic precision metrics.

Main Results:

• The qReading method exhibited small variability across repeated measurements, with standard deviations ≤0.092 log10 units.
• Bland-Altman coefficients of repeatability were ≤0.15 (log10)2 units, correlation coefficients ≥0.91, and Fractional Rank Precision ≥0.81.
• These results held true even without accounting for potential learning effects.

Conclusions:

• The qReading method demonstrates excellent test-retest reliability in normally sighted young adults.
• The high precision and repeatability suggest qReading is a valuable tool for measuring reading function.
• qReading is a promising candidate for future research in diagnosis and treatment outcome evaluation.