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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.