[Retracted] Effect of Intraarticular Injection of Platelet-Rich Plasma on Knee Osteoarthritis: A Multicenter Retrospective Clinical Study

Table 1

The baseline characteristics of the included patients.

Clinical parameters	PRP group, N  = 130	Control group, N  = 120	value
Gender (N)			0.776
Male	80	75
Female	50	55
Age (years)	46.8 ± 15.7	51.2 ± 14.3	0.545
Knees involved (N)	48	56	0.876
Whole blood count (×10^9/L)
Platelet	243.6 ± 62.5	234.2 ± 42.3	0.453
WBC	6.0 ± 1.9	6.3 ± 1.4	0.478
RBC	4.5 ± 0.4	4.3 ± 0.3	0.674
PRP (×10^9/L)
Platelet	958.0 ± 283.1	—	—
WBC	0.0 ± 0.0	—	—
RBC	0.5 ± 0.2	—	—
ALT (IU/L)	24.0 ± 3.2	25.2 ± 3.5	0.786
AST (IU/L)	22.0 ± 1.7	22.7 ± 1.4	0.876
Albumin (g/L)	45.6 ± 12.4	47.1 ± 11.4	0.956
Total bilirubin (μmol/L)	13.2 ± 1.3	15.1 ± 1.2	0.784
INR	0.8 ± 0.1	0.7 ± 0.2	0.554
Triglycerides (mmol/L)	1.0 ± 0.3	1.1 ± 0.2	0.675
Cholesterol (mmol/L)	4.1 ± 1.2	3.9 ± 1.1	0.778
HDL-C (mmol/L)	1.3 ± 0.3	1.2 ± 0.2	0.893
LDL-C (mmol/L)	2.4 ± 0.1	2.5 ± 0.2	0.934
Creatinine (µmol/L)	77 ± 12	75 ± 9	0.757