Table 4.

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

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