Prediction of CD4 T-Lymphocyte Count Using WHO Clinical Staging among ART-Naïve HIV-Infected Adolescents and Adults in Northern Ethiopia: A Retrospective Study

Table 4

Kappa test of the WHO clinical stage with different CD4 count categories among ART-naïve HIV-infected adolescents and adults in northern Ethiopia, n = 19525.

Kappa test	Agreement (%)	Expected agreement (%)	Kappa	Std. Err.	Z	Prob > Z
CD4 count with WHO stages	46.16	46.92	−0.0143	0.0029	−4.89	1.0000
CD4 count <200 and ≥200 cells/mm^3 with WHO stages	46.88	47.30	−0.0081	0.0030	−2.73	0.9968
CD4 count <350 and ≥350 cells/mm^3 with WHO stage	70.47	70.56	−0.0028	0.0045	−0.63	0.7343
CD4 count <500 and ≥500 cells/mm^3 with WHO stage	81.23	81.32	−0.0048	0.0053	−0.91	0.8181