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Table 3 Incidence of three main cancer types by blood group in the Golestan Cohort Study

From: Mortality and cancer in relation to ABO blood group phenotypes in the Golestan Cohort Study

Blood type

Gastric cancer

ESCC

Pancreatic cancer

Number of cases

adjusted HR a (95% CI)

Number of cases

adjusted HR (95% CI)

Number of cases

adjusted HR (95% CI)

O

39

1

69

1

20

1

A

73

1.57 (1.06,2.32)*

67

0.82 (0.58,1.15)

21

0.91 (0.49,1.68)

B

58

1.59 (1.06,2.39)*

62

0.94 (0.67,1.32)

13

0.70 (0.35,1.42)

AB

18

1.35 (0.77,2.36)

18

0.76 (0.45,1.27)

5

0.75 (0.28,2.00)

Non-O

149

1.55 (1.09,2.21)**

147

0.86 (0.64,1.14)

39

0.81 (0.47,1.39)

Rh+

170

1

206

1

53

1

Rh-

18

1.57 (0.97,2.56)

10

0.74 (0.39,1.39)

6

1.70 (0.73,3.96)

  1. aCox regression models adjusted for age, smoking, socioeconomic status, ethnicity, residence, education, and opium use.
  2. *P <0.05, **P <0.01. CI, confidence interval; ESCC: esophageal squamous cell carcinoma; HR: hazard ratio; MR: mortality rate per 100,000 person-years.