Faecal pyruvate kinase isoenzyme type M2 for colorectal cancer screening: A meta-analysis

Table 4 Correlation of faecal pyruvate kinase isoenzyme type M2 sensitivity with tumor node metastasis and Dukes classification n (%)

Reference	Tumor node metastasis classificatoin				Dukes classification
	T1	T2	T3	T4	Dukes A	Dukes B	Dukes C	Dukes D
Kloer et al[50], 2005	9 (55.5)	18 (61.1)	49 (81.6)	12 (83.3)	23 (52.2)	24 (76.0)	26 (80.8)	17 (82.4)
Tonus et al[41], 2006	5 (60)	11 (64)	25 (89)	4 (100)	5 (60.0)	17 (76.0)	9 (89)	10 (90.0)
Haug et al[33], 2007	6 (67)	16 (44)	34 (71)	4 (100)	12 (67.0)	18 (61.0)	12 (67.0)	6 (100.0)
Schmidt et al[53], 2009	8 (57)	20 (84)	42 (79)	11 (91)
Hardt et al[46], 2004	7 (57)	11 (64)	33 (78)	9 (78)
Sum	35	76	183	40	40	59	47	33
mean ± SD	59 ± 5	63 ± 14	80 ± 7	90 ± 10	60 ± 7	71 ± 9	79 ± 11	91 ± 9

n: Number of samples tested; %: Sensitivity.