Table 2.

Comparison of T Cell Subsets Percentage Within the Total Lymphocyte in Patients with ONFH and Healthy Controls

T Cell Subsets (Mean±SD%)	ONFH (n=109)	Controls (n=109)	P-value
CD3+ lymphocytes	74.21±8.01	68.05±10.04	P<0.0001
CD4+ lymphocytes	45.47±8.44	36.83±8.11	P<0.0001
CD8+ lymphocytes	25.13±8.91	25.38±8.24	P=0.588
CD4+/CD8+	2.12±1.03	1.65±0.74	P<0.0001

Notes: For quantitative variables measured in two groups, Mann Whitney U-test was used to perform comparisons between groups. p-values for the difference between subjects with ONFH and heathy controls.

Abbreviation: ONFH, osteonecrosis of the femoral head.