Hering's Law Assessment Tool revisited: introducing a modified novel version--Patients' Response Assessment Tool after Homeopathic Treatment (PRATHoT) in chronic cases.

Hering's Law Assessment Tool emerged as a systematic outcome assessment tool following homeopathic intervention. The authors intend to modify it and develop a new tool-Patient Response Assessment Tool after Homeopathic Treatment (PRATHoT)-in chronic cases through Delphi technique for systematic categorization of probable outcomes following individualized homeopathic treatment in chronic cases. The PRATHoT was drafted after literature review and iterative Delphi rounds with multidisciplinary expert panel, setting Fleiss κ of 0.41 to 1.00 a priori as the desired level of multirater agreement. Following pilot testing, the tool was implemented on 37 patients suffering from knee osteoarthritis over 6 months. Logistic regression analysis confirmed that higher PRATHoT score was significantly associated with achieving pain visual analogue scale responses from the second follow-up visit onwards (B = 0.037-0.066; SE = 0.021-0.036; P = .003-.048). The tool appeared to have acceptable psychometric properties; hence, it may be considered as a promising tool, amendable for further development.