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Olfactory testing shows moderate agreement between NOS and OSIT-J, suggesting practical screening for high-risk individuals.
NOS indices showed moderate agreement with OSIT-J. Although NOS did not surpass OSIT-J in discrimination between high- and low-risk individuals, its rapid, semi-automated workflow makes it a practical option for large-scale olfactory screening in prodromal PD.
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Fukushima et al. (2026) studied this question.
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