Table 1– Diagnostic values of single parameters

	Cases		Controls		Optimal cut-off	Sensitivity %	Specificity %	PPV %	NPV %	p-value
	Subjects n	Mean (95% CI)	Subjects n	Mean (95% CI)	Optimal cut-off	Sensitivity %	Specificity %	PPV %	NPV %	p-value
Lymphocyte fraction %	17	28.1 (18.9–37.4)	73	15.7 (12.1–19.3)	13	71	68	34	91	<0.05
CD4+/CD8+	19	6.1 (5.2–7.0)	83	3.7 (2.9–4.5)	3.8	68	73	37	91	<0.02
CD103+CD4+/CD4+	19	0.23 (0.20–0.27)	82	0.32 (0.28–0.36)	0.22	63	76	29	88	0.064
s-ACE U·L⁻¹	17	119.0 (86.6–151.4)	54	57.2 (49.2–62.2)	84	82	89	70	94	<0.001

PPV: positive predictive value; NPV: negative predictive value; s-ACE: serum angiotensin-converting enzyme.