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Table 1 The basic characteristics of the included studies

From: Hypermethylated APC in serous carcinoma based on a meta-analysis of ovarian cancer

First author

Country

Ethnicity

Method

Sample

Cancer

LMP

Benign

Normal

Low-grade

High-grade

StageI-II

Stage III-IV

Serous carcinoma

Non-serous carcinoma

N (M %)

N (M %)

N (M %)

N (M %)

M/N

M/N

M/N

M/N

M/N

M/N

Rathi 2002 [30]

USA

Caucasians

MSP

Tissue

49 (18.4)

-

16 (0)

-

-

-

-

-

-

-

Caceres 2004 [29]

USA

Caucasians

MSP

Tissue

35 (11.4)

10 (10)

10 (0)

10 (0)

0/12

4/23

1/8

3/27

2/21

2/14

Caceres 2004 [29]

USA

Caucasians

MSP

Blood

35 (8.6)

10 (10)

10 (0)

20 (0)

0/12

3/23

1/8

2/27

1/21

2/14

Makarla 2005 [28]

USA

Caucasians

MSP

Tissue

23 (21.7)

23 (0)

23 (0)

16 (0)

-

-

-

-

1/9

4/14

Tam 2007 [27]

China

Asians

MSP

Tissue

89 (47.2)

16 (50)

19 (26.3)

16 (25)

-

-

-

-

-

-

Wu 2007 [26]

Norway

Caucasians

MSP

Tissue

51 (23.5)

2 (0)

2 (0)

-

7/26

5/23

9/25

3/26

3/19

9/27

Shen 2007 [31]

China

Asians

MSP

Tissue

63 (22.2)

-

-

30 (0)

-

-

-

-

4/34

10/29

Sun 2008 [32]

China

Asians

MSP

Tissue

59 (32.2)

-

-

42 (2.4)

5/36

14/23

2/21

17/38

11/30

8/29

Ho 2010 [25]

China

Asians

MSP

Tissue

63 (23.8)

-

10 (0)

5 (0)

-

-

-

-

13/48

2/15

Bhagat 2012 [24]

India

Caucasians

MSP

Tissue

86 (29.1)

14 (28.6)

19 (15.8)

15 (0)

10/30

15/56

6/23

19/63

11/44

14/42

Zhang 2013 [23]

China

Asians

MSP

Blood

20 (35)

-

-

62 (0)

-

-

-

-

-

-

Brait 2013 [22]

USA

Caucasians

QMSP

Tissue

33 (15.1)

-

-

13 (0)

-

-

-

-

-

-

Al-Shabanah 2014 [21]

Saudi Arabia

Caucasians

MSP

Tissue

200 (36)

-

-

200 (10)

-

-

28/103

44/97

-

-

  1. MSP methylation specific polymerase chain reaction, QMSP quantitative methylation specific PCR, M methylation, N the number of the total samples, “-” stands for data not applicable, LMP low malignant potential tumor