Table 4 Correlation between the subtypes of lymphocytes and natural killer cells with the duration of AA disease

From: CD4, CD8 and natural killer cells are depressed in patients with alopecia areata: their association with disease activity

Immunophenotype cells	r	P value
CD4⁺ T cells (%)	0.53	< 0.001*
CD8⁺ T cells (%)	0.43	0.002*
CD4⁺/CD8⁺ ratio (%)	0.15	0.287
CD56 bright CD16⁻ (%)	0.45	0.001*
CD56 bright CD16⁺ (%)	0.03	0.824
CD56⁻ CD16⁺ (%)	0.02	0.909

r, correlation value
^*p value < 0.05 was considered statistically significant

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