Transforming growth factor beta (TGF-β) in adolescent chronic fatigue syndrome

Table 2 TGF-β isoforms across CFS patients (including Fukuda and Canada 2003-subgroups) and healthy controls

	CFS patients (n = 120)		p value^a	Healthy controls (n = 68)		CFS, Fukuda subgroup (n = 88)		p value^a	CFS, Canada 2003 subgroup (n = 46)		p value^a
Plasma TGF-β1 (pg/ml) Median, IQR	4927	5157	0.482	5692	6350	4944	4276	0.599	4880	6247	0.831
Plasma TGF-β2 (pg/ml) Mean, SD	758	262	0.928	754	278	712	246	0.809	780	252	0.621
Plasma TGF-β3 (pg/ml) Median, IQR	230	227	0.901	251	250	230	208	0.990	243	254	0.760

TGF transforming growth factor beta, SD standard deviation, IQR interquartile range
^aCompared with healthy controls. Statistical comparisons across groups are based upon Independent sample t test or Mann–Whitney test as appropriate

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