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Purpose <p>To evaluate the inter- and intra-assessor reliability of ultrasonographic assessment of swallowing-related muscle indices in healthy young adults.</p> Methods <p>Three examiners conducted ultrasonographic evaluations on healthy young adults (<i>n</i> = 34, age: ≥ 20&#xa0;years) examining the thickness and area of the geniohyoid muscle, anterior belly of the digastric muscle, tongue, and the mylohyoid, masseter, and depressor anguli oris muscles. To assess inter-rater reliability, each examiner evaluated each assessment item for one subject three times on the same day. Intra-rater reliability was assessed by rater No. 3 re-evaluating the participants 4–7&#xa0;days after the initial measurement, using the retest method. Image analysis was conducted by a single examiner utilizing an ultrasonography measurement tool. Statistical analysis was performed using intraclass correlation coefficients (ICCs) for intra- and inter-rater reliability.</p> Results <p>The study included 34 participants (male: 17, female: 17; age: 25 ± 2&#xa0;years, body mass index: 20.3 ± 1.7&#xa0;kg/m<sup>2</sup>). For intra-rater reliability for thickness of the geniohyoid muscle, ICC = 0.94 [95% CI (0.89, 0.97)], and ICC = 0.90 [95% CI (0.81, 0.93)] for the area of the anterior belly of the digastric muscle. For inter-rater reliability, ICC = 0.93 [95% CI (0.88, 0.96)] and 0.86 [95% CI (0.77, 0.92)] for the thickness of the geniohyoid muscle, and area of the anterior belly of the digastric muscle, respectively.</p> Conclusions <p>The inter- and intra-assessor reliability of ultrasound assessments of swallowing-related indices in young healthy subjects was good, exhibiting particularly high accuracy for the geniohyoid muscle and the anterior belly of the digastric muscle.</p>

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Intra- and inter-rater reliability of swallowing-related muscle assessments using ultrasound devices

  • 期刊论文

  • 发表日期：

    2025年8月25日

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  • Shota Ishino,
  • Motoomi Nagasaka,
  • Koki Kawamura,
  • Yuto Masuda,
  • Masaki Kamiya,
  • Taku Iwase,
  • Keisuke Maeda,
  • Hitoshi Kagaya

摘要

Purpose

To evaluate the inter- and intra-assessor reliability of ultrasonographic assessment of swallowing-related muscle indices in healthy young adults.

Methods

Three examiners conducted ultrasonographic evaluations on healthy young adults (n = 34, age: ≥ 20 years) examining the thickness and area of the geniohyoid muscle, anterior belly of the digastric muscle, tongue, and the mylohyoid, masseter, and depressor anguli oris muscles. To assess inter-rater reliability, each examiner evaluated each assessment item for one subject three times on the same day. Intra-rater reliability was assessed by rater No. 3 re-evaluating the participants 4–7 days after the initial measurement, using the retest method. Image analysis was conducted by a single examiner utilizing an ultrasonography measurement tool. Statistical analysis was performed using intraclass correlation coefficients (ICCs) for intra- and inter-rater reliability.

Results

The study included 34 participants (male: 17, female: 17; age: 25 ± 2 years, body mass index: 20.3 ± 1.7 kg/m2). For intra-rater reliability for thickness of the geniohyoid muscle, ICC = 0.94 [95% CI (0.89, 0.97)], and ICC = 0.90 [95% CI (0.81, 0.93)] for the area of the anterior belly of the digastric muscle. For inter-rater reliability, ICC = 0.93 [95% CI (0.88, 0.96)] and 0.86 [95% CI (0.77, 0.92)] for the thickness of the geniohyoid muscle, and area of the anterior belly of the digastric muscle, respectively.

Conclusions

The inter- and intra-assessor reliability of ultrasound assessments of swallowing-related indices in young healthy subjects was good, exhibiting particularly high accuracy for the geniohyoid muscle and the anterior belly of the digastric muscle.