Novel Regression Equations Incorporating Aging-specific Contributions of Various Explanatory Variables in Predicting Spirometric Parameters in Non-Obese, Japanese Adults

Kazuhiro Yamaguchi^1*, Hisamitsu Omori², Ayumi Onoue³, Takahiko Katoh³, Yasuhiro Ogata⁴, Naoki Miyao⁵, Takao Tsuji⁶ and Kazutetsu Aoshiba⁷

¹Division of Sleep Medicine, Tokyo Women’s Medical University, 8-1 Kawata-cho, Shinjuku-ku, Tokyo 162-8666, Japan

²Department of Biomedical Laboratory Sciences, Kumamoto University, 1-1-1 Honjou, Chuou-ku, Kumamoto 860-8556, Japan

³Department of Public Health Faculty of Life Sciences, Kumamoto University, 1-1-1 Honjou, Chuou-ku, Kumamoto 860-8556, Japan

⁴Health Care Center, Japanese Red Cross Kumamoto, 2-1-1 Nagamineminami, Kumamoto 861-8528, Japan

⁵Internal Medicine, Nihon Koukan Hospital, 1-2-1 Koukan-dori, Kawasaki-ku, Kawasaki-city, Kanagawa 210-0865, Japan

⁶Respiratory Medicine, Institute of Geriatrics, Tokyo Women’s Medical University, 2-15-1 Shibuya, Shibuya-ku, Tokyo 150-0002, Japan

⁷Department of Respiratory Medicine, Tokyo Medical University Ibaraki Medical Center, 3-20-1, Chuou, Ami, Inashiki, Ibaraki 300-0395, Japan

^*Corresponding Author: Kazuhiro Yamaguchi, Division of Sleep Medicine, Tokyo Women’s Medical University, 8-1 Kawata-cho, Shinjuku-ku, Tokyo 162-8666, Japan, Tel: +81-3-3353-8111 Email: