Table 1.

Demographic Characteristics of Participants by Treatment

Characteristic	Tai Chi n=46	Physical Therapy n= 40
Mean Age – yrs.	59.9±10.1	60.9±10.8
Female sex—no. of patients (%)	35 (76)	29 (73)
Race —no. of patients (%)
White	18 (39)	23 (58)
Black	19 (41)	11 (27)
Asian/Other	9 (20)	6 (15)
Body Mass Index, kg/m	32.7±7.0	32.8±7.0
Duration of knee pain - yrs.	10.0±13.6	10.6±13.6
Kellgren-Lawrence grade, no. (%)*
0	1 (2)	1 (3)
1	4 (9)	2 (5)
2	18 (41)	13 (33)
3	17 (39)	17 (43)
4	4 (9)	7 (18)
Highest Level of Education, n (%)
High school education	6 (13)	7 (18)
College/trade school	17 (37)	15 (37)
College Graduate	12 (26)	6 (15)
Graduate School	11 (24)	12 (30)

All values are mean ± standard deviation, unless otherwise specified.

^*K/L grade for 2 participants in the Tai Chi group not recorded. Total Physical Therapy group percentage exceeds 100% due to rounding.