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KMID : 1100920210420050376
Korean Journal of Family Medicine
2021 Volume.42 No. 5 p.376 ~ p.381
Reliability and Validity of an Ultrasonic Device for Measuring Height in Adults
Cho Seon-Hwa

Cho Young-Gyu
Park Hyun-Ah
Bong A-Ra
Abstract
Background: The ultrasonic stadiometer was originally developed as a device to measure and monitor children¡¯s height. However, an ultrasonic stadiometer (InLab S50; InBody Co., Seoul, Korea) was used to measure adults¡¯ height in the 2018 Korea Community Health Survey (KCHS). This study was conducted to assess the reliability and validity of the InLab S50 in adults.

Methods: The study subjects were 120 adults (reliability test, n=20; validity test, n=100) who had visited a health screening center. The intra- and inter-rater reliabilities of InLab S50 were assessed using the intraclass correlation coefficient (ICC). The agreement between InLab S50 and an automatic stadiometer (HM-201; Fanics, Busan, Korea) was assessed using Pearson¡¯s correlation coefficient and Bland-Altman analysis.

Results: The intra- and inter-rater reliabilities of the InLab S50 were excellent (ICC=0.9999 and 0.9998, respectively). The correlation coefficient of the height measured by the two measurement devices was very high (r=0.996). The difference (¥Äheight [HM-201-InLab S50]) was -0.15¡¾0.78 cm (95% limit of agreement [LOA], -1.69 to 1.38). After excluding the values outside 95% LOA, the difference was further reduced to -0.05¡¾0.59 cm (95% LOA, -1.20 to 1.10).

Conclusion: This study showed that the InLab S50 is a reliable and valid device for the measurement of adults¡¯ height. Therefore, we think that InLab S50 could be used to measure adults¡¯ height in household health surveys such as the KCHS.
KEYWORD
Body Height, Ultrasonic Waves, Health Surveys, Validation Study
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