Immune Mediators in Osteoarthritis: Infrapatellar Fat Pad-Infiltrating CD8+ T Cells Are Increased in Osteoarthritic Patients with Higher Clinical Radiographic Grading

Table 1

Demographic characteristics of patient population.

Demographic data	Ahlback classification system (Mean (SD))				value
	Grade 1	Grade 2	Grade 3	Grade 4
Age (years)	70.11 (4.73)	67.30 (9.24)	70.36 (7.98)	74.33 (7.51)	0.43
Weight (kilograms)	69.99 (11.63)	68.28 (16.63)	65.39 (10.21)	61.17 (10.42)	0.59
Height (centimeters)	155.67 (6.32)	154.91 (7.93)	153.28 (7.14)	157.00 (14.11)	0.83
Body mass index (kg/m^2)	25.20 (4.87)	28.39 (6.10)	27.83 (4.02)	24.71 (0.32)	0.36
Body temperature (Celsius)	36.12 (0.72)	36.56 (0.41)	36.40 (0.48)	36.32 (0.16)	0.16
Complete blood count
Red blood cells (10^6/ul)	4.59 (0.26)	4.38 (0.49)	4.47 (0.43)	3.88 (0.47)	0.11
Platelet (10^3/uL)	265.13 (38.00)	262.07 (72.81)	267.50 (51.37)	236.67 (108.74)	0.90
White blood cells (10^3/uL)	7.54 (2.74)	6.15 (1.60)	7.76 (1.76)	7.03 (3.03)	0.26
Neutrophils (percent)	59.89 (11.40)	59.85 (9.10)	62.45 (7.04)	57.30 (16.19)	0.84
Lymphocytes (percent)	29.25 (8.74)	28.85 (7.30)	27.21 (6.40)	29.33 (12.66)	0.94