From: Prevalence and associated factors of knee osteoarthritis in a rural Chinese adult population: an epidemiological survey
Age group
Women
Men
n
Case (%)
40~
730
70 (9.59)
440
40 (9.09)
50~
516
89 (17.25)
497
96 (19.32)
60~
415
89 (21.45)
554
111 (20.04)
≥70
106
31 (29.25)
170
42 (24.71)
Total
1767
279 (15.79)
1661
289 (17.40)