. 2008 Oct 22;3(10):e3485. doi: 10.1371/journal.pone.0003485

Table 3. Correlations between different cytokines responses to individual mycobacterial antigens.

Antigen	cytokine	IL-13			IL-5
		N^a	ρ^b	p value	N^a	ρ^b	p value
PHA	IFN-γ	126	0.411	1.76×10⁻⁶	40	0.022	0.892
	IL-13	-	-	-	28	0.334	0.082
PPD	IFN-γ	153	0.226	0.005	88	−0.150	0.164
	IL-13	-	-	-	60	0.223	0.0865
Ag85	IFN-γ	59	0.141	0.286	35	−0.368	0.0295
	IL-13	-	-	-	12	−0.654	0.0211
STCF	IFN-γ	109	0.285	0.0027	50	−0.0893	0.537
	IL-13	-	-	-	30	−0.129	0.496
KMTB	IFN-γ	138	0.398	1.33×10⁻⁶	76	0.071	0.542
	IL-13	-	-	-	45	0.14	0.361

Number of infants for whom both cytokine data were available for correlation analysis.

Spearman rank-order correlation coefficient.

ρ values>0.3 with corresponding p values≤0.05 are shown in bold.

IFN-γ: interferon-gamma; IL-13: interleukin-13; IL-5: interleukin-5; PHA: phytohaemagglutinin; PPD: purified protein derivative; Ag85: antigen 85; STCF: short term culture filtrate; KMTB: killed Mycobacterium tuberculosis.