... shift-workers and 10% in morning workers and regular daily coffee con-sumption was 12% in shift-workers and 37% in morn-ing-workers.ComplaintsPrevalence of complaint of at least one GI symptom ... (0-6). To shorten thetime for filling the forms, we included only the 5 m ostcommon GI symptoms, namely, diarrhea and constipa-tion, bloating, belching, heartburning, and epigastriapain and ... workers. Occupational Medicine 2003,53:103-108.7. Claire C, Sally L, Brenda W: Relationship of work schedules to gastrointestinal diagnoses, symptoms, and medication use in autofactory workers....