Table 1:

Subject Characteristics

	Control (n=33)	Case (n=59)	p-value*
Age years, mean (SD)	71.0 (6.6)	73.2 (6.8)	0.139
Female, N (%)	21 (63.6%)	48 (81.4%)	0.060
Race, N (%)			0.274
Black	15 (45.5%)	20 (33.9%)
White	18 (54.5%)	39 (66.1%)
BMI, mean (SD)	33.3 (3.3)	35.9 (4.2)	0.002
Maximum KL score, n (%)			<0.001
0	1 (3.0%)	0
1	32 (97.0%)	0
2	0	11 (18.6%)
3	0	13 (22.0%)
4	0	21 (35.6%)
Replacement	0	14 (23.7%)

BMI, body mass index; KL, Kellgren Lawrence

^*Continuous variables tested using t-test with Satterthwaite correction, categorical variables tested using chi-square test or Fisher’s Exact Test.