Racial Differences in Serum Adipokine and Insulin Levels in a Matched Osteoarthritis Sample: A Pilot Study

Table 1

Description of sample and serum biomarker concentrations.

	Caucasian	Asian	p value
Mean (SD) age in years	62.5 (8.9); (range 50–77)	62.1 (9.6); (range 48–78)
Gender: n (%) male	7 (46.7%)	7 (46.7%)
Surgical joint: n (%) knee	12 (80.0%)	12 (80.0%)
Mean (SD) BMI kg/	29.8 (4.2); (range 24–41)	29.8 (4.4); (range 25–40)
Diabetes n (%)	2 (13.3%)	3 (20%)
Mean comorbidity count (SD)	2.2 (1.5); (range 0–5)	2.3 (1.5); (range 0–5)
Median (range) serum leptin (pg/mL)	10,264.9 (1,221.12–36,181.4)	20,208.2 (5030.6–46,543.5)
Median (range) serum adiponectin (pg/mL)	16,264,000 (6,946,204–82,845,000)	9,391,300 (3,714,488–26,940,000)
Median (range) serum insulin (pg/mL)	284.8 (27.1–483.9)	520.9 (164.5–949.2)
Mean WOMAC knee pain (SD)	52.0 (21.4)	56.8 (16.8)
Mean WOMAC knee function (SD)	47.5 (22.4)	49.8 (18.9)