Table 2.

Effects of Risk Factors for Pancreatic Adenocarcinoma in Multivariable Logistic Regression Analysis

	Patients (N = 808)		Controls (N = 808)
Study Variables	N	%	N	%	AOR (95% CI)*
Past history of diabetes mellitus
Never	614	76.0	729	90.2	1 (reference)
Ever	194	24.0	79	9.8	2.6 (1.9–3.4)
Duration of diabetes, yr
≤1	76	9.4	22	2.7	4.0 (2.5–6.6)
>1	118	14.6	57	7.1	2.4 (1.7–3.4)
2–5	55	6.8	25	3.1	2.7 (1.7–4.4)
6–10	26	3.2	10	1.2	2.8 (1.3–5.9)
>10	37	4.6	22	2.7	1.9 (1.1–3.3)
Treatment of diabetes mellitus
Insulin only	15	1.9	3	0.4	5.9 (1.7–21.1)
Oral only	82	10.2	51	6.3	1.9 (1.3–2.8)
Both	21	2.6	3	0.4	7.1 (2.1–24.4)
Cigarette smoking
Never	323	40.0	415	51.4	1 (reference)
Ever	485	60.0	393	48.6	1.6 (1.2–1.9)
Duration of smoking, pack-years
≤20	199	24.6	203	25.1	1.4 (1.1–1.8)
>20	286	35.4	190	23.5	2.0 (1.6–2.6)
Alcohol consumption
Never	371	45.9	364	45.0	1 (reference)
Ever	437	54.1	444	55.0	1.0 (0.8–1.2)
Heavy alcohol drinking†
≤60 mL ethanol/day	355	43.9	386	47.8	0.9 (0.7–1.2)
>60 mL ethanol/day	67	8.3	42	5.2	1.6 (1.1–2.5)

^*AOR = odds ratio adjusted for age, sex, race/ethnicity, smoking history, diabetes history, heavy alcohol consumption, family history of pancreatic cancer, history of pancreatitis, education level, and state of residency.

^†Data on duration of drinking were missing for 15 patients and 16 controls.