Intra-Rater and Inter-Rater Reliability of Tongue Coating Diagnosis in Traditional Chinese Medicine Using Smartphones: Quasi-Delphi Study

Zhi Chun Wang   ¹ , BSc ;   Shi Ping Zhang   ¹ , PhD ;   Pong Chi Yuen   ² , PhD ;   Kam Wa Chan   ^{3 *} , PhD ;   Yi Yi Chan   ^{1 *} , MPhil ;   Chun Hoi Cheung   ^{1 *} , MPhil ;   Chi Ho Chow   ^{1 *} , PhD ;   Ka Kit Chua   ^{1 *} , PhD ;   Jun Hu   ⁴ , MD ;   Zhichao Hu   ^{1 *} , BMed ;   Beini Lao   ^{5 *} , MMed ;   Chun Chuen Leung   ^{6 *} , MPhil ;   Hong Li   ^{1 *} , MD ;   Linda Zhong   ^{1 *} , PhD ;   Xusheng Liu   ^{5 *} , MD ;   Yulong Liu   ^{1 *} , MD ;   Zhenjie Liu   ^{5 *} , MD ;   Xin Lun   ^{1 *} , MPhil ;   Wei Mo   ^{7 *} , MPhil ;   Sheung Yuen Siu   ^{1 *} , BS, BCM ;   Zhoujian Xiong   ^{8 *} , MD ;   Wing Fai Yeung   ^{9 *} , PhD ;   Run Yun Zhang   ^{10 *} , MPhil ;   Xuebin Zhang   ^{1 *} , MD

¹ School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China (Hong Kong)

² School of Computing Science, Hong Kong Baptist University, Hong Kong, China (Hong Kong)

³ Department of Medicine, The University of Hong Kong, Hong Kong, China (Hong Kong)

⁴ Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China

⁵ Guangdong Provincial Hospital of Traditional Chinese Medicine, The Second Affiliated Hospital of Guangzhou University of Traditional Chinese Medicine, Guangzhou, China

⁶ Hong Zhi Tang Chinese Medicine Clinic, Hong Kong, China (Hong Kong)

⁷ Guang Dong Second Traditional Chinese Medicine Hospital, Guangzhou, China

⁸ Yongan Hospital, Foshan, China

⁹ School of Nursing, Hong Kong Polytechnic University, Hong Kong, China (Hong Kong)

¹⁰ China Academy of Chinese Medical Sciences, Guang An Men Hospital, Beijing, China

*these authors contributed equally