Table 1.

Plasma and SF VEGF in OA patients

	Total	KL grade 2	KL grade 3	KL grade 4	P value
n	80	29	27	24
Age (years)	69.9 ± 0.9	70.2 ± 1.3	68.4 ± 1.3	71.1 ± 2.1	0.5
Gender (M/F)	17/63	6/23	6/21	5/19	0.2
BMI (kg/m2)	26.7 ± 0.5	26.6 ± 0.7	26.2 ± 0.8	27.5 ± 0.9	0.4
Plasma VEGF (pg/ml)	163.5 ± 13.7	100.5 ± 10.1	166.2 ± 19.2	236.6 ± 32.9	P < 0.01
SF VEGF (pg/ml)	1,614.3 ± 64.5	1,153.5 ± 76.1	1,602.5 ± 7.6	2,184.6 ± 80.1	P < 0.01

Data represent mean and standard error of the mean. P values for differences among Kellgren and Lawrence (KL) subgroups

SF synovial fluid, VEGF vascular endothelial growth factor, BMI body mass index