Dynamic statistical analysis of TCM symptoms on coronary heart disease angina pectoris

The effects of Traditional Chinese Medicine (TCM) for the treatment of coronary heart disease angina pectoris require accurate assessment. However, the TCM symptoms of this disease are numerous and complicated. To evaluate TCM treatment based on TCM symptoms, in this study, we applied descriptive statistical methods to 73 symptoms in the attack period, and after three-months of TCM treatment, the same group of patients, now in the remission period, underwent the same analysis again. Using two-way contingency table analysis, we compared the dynamic changes of all 73 TCM symptoms between the above-mentioned attack and remission periods. Furthermore, we chose symptoms that arise in more than 10% of patients (high-incidence symptoms) and investigated the dynamic changes between the attack period and the remission period. Finally, we found that almost all symptoms (except blackish complexion (P value equals 0.93)) were significantly different between the two periods. The number of patients with high-incidence symptoms (except tinnitus) decreased. The percentage of patients with tinnitus increased 6.72% from the attack period to the remission period. Therefore, we concluded that three-months of TCM treatment significantly improved patients' performance in coronary heart disease angina pectoris TCM symptoms. Based on the survey data and dynamic statistical analysis, this study provides references for doctors, experts, and patients to evaluate the effects of TCM treatment in a more efficient and statistical manner.