Allergology International (Apr 2025)

Skin health survey on atopic dermatitis among Japanese children: The Tohoku Medical Megabank Project Birth and Three-Generation Cohort Study

  • Chikana Kawaguchi,
  • Maki Ozawa,
  • Takanori Hidaka,
  • Keiko Murakami,
  • Mami Ishikuro,
  • Fumihiko Ueno,
  • Aoi Noda,
  • Tomomi Onuma,
  • Genki Shinoda,
  • Masatsugu Orui,
  • Taku Obara,
  • Yumiko Ito,
  • Takashi Kakinuma,
  • Kazuhiro Kudoh,
  • Hiroaki Ozawa,
  • Satoshi Nakagawa,
  • Masato Mizuashi,
  • Ryoko Omori,
  • Masatoshi Deguchi,
  • Yumi Kanbayashi,
  • Masayuki Asano,
  • Toshiya Takahashi,
  • Muneo Tanita,
  • Masahiro Hara,
  • Kenshi Yamasaki,
  • Takayoshi Tadaki,
  • Hiromi Suzuki,
  • Katsuko Kikuchi,
  • Kenichiro Tsuchiyama,
  • Takenobu Ohashi,
  • Shu Sasai,
  • Motoko Honda,
  • Taku Fujimura,
  • Sadanori Furudate,
  • Yoshiko Kagimoto,
  • Maki Kawamura,
  • Nobuko Tabata,
  • Rika Chikama,
  • Hiromi Komatsu,
  • Yota Sato,
  • Kayo Tanita,
  • Yutaka Kimura,
  • Shino Yusa,
  • Hitoshi Terui,
  • Hisayuki Tono,
  • Yusuke Muto,
  • Shinichi Kuriyama,
  • Masayuki Yamamoto,
  • Setsuya Aiba

DOI
https://doi.org/10.1016/j.alit.2024.09.008
Journal volume & issue
Vol. 74, no. 2
pp. 246 – 253

Abstract

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Background: Precise skin phenotypic data are indispensable in accurately diagnosing atopic dermatitis (AD). Therefore, this study examined the interobserver concordance for AD and non-AD diagnoses between two dermatologists. AD prevalence determined by the self-reported physician diagnoses and the diagnoses determined from the United Kingdom (UK) diagnostic criteria were compared with the diagnoses made by the two dermatologists, using data from a skin health survey. Methods: This study included 1,638 children that participated in the skin health survey, which was part of the Tohoku Medical Megabank Project Birth and Three-Generation Cohort Study. AD was assessed using dermatologist assessments, self-reported physician diagnoses, and the UK diagnostic criteria. The concordance for diagnoses was evaluated using kappa. The sensitivity and specificity of the self-reported physician diagnoses and the UK diagnostic criteria were calculated by comparing them with the two dermatologists’ diagnoses. Results: Among the 1,638 children, 393 (24.0 %), 194 (11.9 %), and 597 (37.2 %) were diagnosed with AD by the two dermatologists, physicians, and the UK diagnostic criteria, respectively. The kappa (95 % CI) of the interobserver concordance for AD or non-AD diagnoses between the two dermatologists was 0.78 (0.75–0.81). The sensitivity and specificity of the self-reported physician diagnoses were 26.7 % and 94.1 %, respectively. The sensitivity and specificity of the UK diagnostic criteria were 85.0 % and 82.4 %, respectively. Conclusions: Interobserver concordance for AD or non-AD diagnoses between the two dermatologists was substantial. Self-reported physician diagnoses exhibited low sensitivity that potentially indicated underdiagnosis of AD, whereas the UK diagnostic criteria might overdiagnose AD.

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