Comparison of Odor Index Calculation Procedures for Low-Concentration Samples

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Key Points

The study aims to analyze different calculation procedures for the odor index in low-concentration samples and their effects on measurement accuracy.
Conducted probabilistic analysis using the CDE method.
Compared the standard procedures involving correct response rates and cut-off averages.
Examined the impact of different dilution factors on odor index calculations.
Found that certain dilution factors (especially a dilution factor of 3) affect the precision of the odor index.
Confirmed the cut-off average method as a promising standard for calculating the odor index.
Identified higher additional measurement probabilities when using the cut-off average method, suggesting alternative approaches when data is insufficient.

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Research compares odor index calculation methods for low-concentration samples, indicating significant impacts on accuracy.

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Fujioka et al. (2026) studied this question.

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