Effect of Tai Chi on Physical Function, Fall Rates and Quality of Life Among Older Stroke Survivors. The research is designed , randomized controlled trial , which are classified into 3 groups: Tai Chi (TC), Silver Sneackers (SS), Usual Care (UC) by survivors of stroke are a sample of study ,145 people. Describe sample used in study consisted of Age, Sex, Marital status, College graduate, Employment status, Income. Each variable is used to measure statistically different , including age is used Mean, SD. Other variables are used Frequency, percentage, which the use of statistics to measure this is appropriate. Comparing differences between groups (TC, SS and UC) are using the same variables to describe the sample. However, there are different statistic is the age using F test (ANOVA) and other variables using Chi- Square, which the use of statistics to measure this is appropriate.