Clinical value of ankle flexion and extension exercises combined with a psychological intervention in knee osteoarthritis

Table 1 Analysis of baseline data of knee osteoarthritis patients in the two groups

Factors	Control group (n = 54)	Research group (n = 62)	χ2/t value	P value
Age (yr)	59.46 ± 6.95	58.55 ± 6.82	0.711	0.479
Sex (male/female)	25/29	27/35	0.894	0.466
Disease course (yr)	5.20 ± 2.55	5.37 ± 2.67	0.349	0.728
Single knee disease (yes/no)	38/16	41/21	0.813	0.269
Cause of illness (excessive exercise/sprain/others)	25/19/10	29/21/12	0.406	0.705
Education level (junior high school and below/senior high school and above)	34/20	38/24	0.404	0.725