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Table 2 The secretor status and ABO blood type of the oral cancers compared to a healthy control group

From: The secretor status of blood group antigens in the saliva in people with oral cancers: a systematic review

Study

Secretor status n (%)

Male %

Female %

ABO blood type %

Oral cancers/Pre-malignant oral diseases

Healthy controls

Secretors

Non-secretors

Secretors

Non-secretors

Cases

Controls

Secretors

Non-secretors

Secretors

Non-secretors

Cases

Control

Cases

Control

Cases

Control

Case

Control

A

B

A B

O

A

B

A B

O

Ad'hiah et al. 2018 [11]

14

(28)

36

(72)

28

(82)

06

(17)

NR

NR

NR

NR

NR

NR

NR

NR

N R

N R

N R

N R

N R

N R

N R

N R

Bakhtiari et al. 2019 [21]

19

(33)

38

(67)

39

(74)

14

(26)

NR

NR

NR

NR

NR

NR

NR

NR

N R

N R

N R

N R

N R

N R

N R

N R

Cerović et al. 2008 [12]

45

(79)

12

(21)

47

(83)

10

(18)

83

85

17

15

60

70

40

30

N R

N R

N R

N R

N R

N R

N R

N R

bGarrett et al. 1971 [25]

212

(77)

64

(23)

644

(76)

207

(24)

NR

NR

NR

NR

NR

NR

NR

NR

42

10b

4

8

4

1

11b

48

aHallikeri et al. 2014 [20]

00

(0)

33

(100)

56

(85)

10

(15)

NR

NR

NR

NR

NR

NR

NR

NR

36

27

3

3

3

5

1

30

12

6

Lamey et al. 1994 [6]

66

(66)

34

(34)

64

(64)

36

(36)

NR

NR

NR

NR

NR

NR

NR

NR

23

29

6

4

2

1

9

20

2

59

Rai et al. 2015 [23]

28

(87)

04

(13)

27

(84)

05

(16)

13

34

75

13

0

50

13

3

42

20

9

2

9

3

8

29

4

29

Vidas et al. 1999 [24]

46

(75)

15

(25)

47

(77)

14

(23)

NR

NR

NR

NR

NR

NR

NR

NR

N R

N R

N R

N R

N R

N R

N R

N R

  1. Abbreviations: NR not reported
  2. aIn this study, data of two groups; ´patients with a tobacco-related habit, but no lesions´ and ´healthy controls´ were combined as the control group because there were no pathological changes in both the groups
  3. bThis study has reported data as a percentage separately for group A, O, and ´AB+B´ together