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Effect of two week treatment with placebo, ranitidine, omeprazole 10 mg (OM10), or omeprazole 20 mg (OM20) on dyspeptic symptoms according to percentage of patients who became completely symptom free (no symptoms) and those with no need for further management (main outcome criterion) (means and 95% two sided confidence intervals; exact test). For assessment of significance levels, see text. The number of patients per group is given in table 1. Hp, Helicobacter pylori.
