Table 4.

Influence of duration of acid-suppressing drug therapy on the risk of acute pancreatitis.

	Cases (36)	Controls (1000)	OR (95% CI)*
Duration of antiulcer therapy†
≤ 30 days	3	47	2.3 (0.5–9.5)
> 30 days	11	234	1.1 (0.4–3.3)
Daily dose of cimetidine†, ‡
< 800 mg	2	22	2.2 (0.4–12.6)
≥ 800 mg	3	41	1.7 (0.4–7.7)
Daily dose of ranitidine†, §
< 300 mg	2	26	1.9 (0.3–10.3)
≥ 300 mg	4	100	1.1 (0.3–4.2)

^*Adjusted for age, gender, calendar year, and current use of other pancreatoxic medication.

^†Current use compared with nonuse.

^‡Data on daily dose of cimetidine was not available for two controls.

^§Data on daily dose of ranitidine was not available for three controls.