Table 1.

Characteristics of samples used in this study, drawn from the NCI's PLCO cancer cohort, and from the Mayo Clinica.

Total incident PDAC cases (N = 216)Total controls (N = 615)
PLCO (N = 179)Mayo (N = 37)PLCO (N = 475)Mayo (N = 140)
Age (SD)b63.4 (5.1)68.9 (9.2)63.9 (5.2)67.0 (10.2)
Male (%)103 (58)23 (62)289 (61)86 (61)
White, non-Hispanic (%)158 (88)11 (100)419 (88)61 (100)
Body mass indexc (SD)27.3 (4.8)29.9 (84)27.2 (4.8)28.4 (5.3)
Personal history of diabetes mellitus (%)22 (12)5 (45)36 (8)9 (15)
Ever smoker (%)105 (58)5 (50)245 (52)24 (44)
Pack years smokedd (SD)22.8 (30.9)24.7 (11.6)17.7 (26.7)21.1 (21.6)
  • aIn the Mayo Clinic sample, data were not available on race, body mass index (BMI), personal history of diabetes mellitus, and smoking status on 26 cases and 78 controls.

  • bSD, standard deviation.

  • cBMI = weight (kg)/height (m)2.

  • dPack years = number of cigarette packs smoked per day × number of years smoked.