HOSPITALIZATION FOR ACUTE PYELONEPHRITIS IN MANITOBA, CANADA, DURING THE PERIOD FROM 1989 TO 1992 - IMPACT OF DIABETES, PREGNANCY, AND ABORIGINAL ORIGIN

Population-based rates of hospitalization for acute pyelonephritis wer e estimated over 3 years with use of provincial administrative data on health care, Retrospective review of records of ICD9-CM discharge cod es of pyelonephritis and urinary infection was performed in two acute care institutions to validate the discharge diagnosis; 80% of patients with a discharge diagnosis of pyelonephritis and 7% to 20% of patient s with a discharge diagnosis of urinary infection met clinical criteri a for admission for acute pyelonephritis. Mean rates of hospitalizatio n +/- SD for acute pyelonephritis were 10.86 +/- 0.51 per 10,000 popul ation among women and 3.32 +/- 0.27 per 10,000 population among men. F rom 18% to 31% of hospitalized women aged 20-39 years were pregnant; 3 6% of 797 hospitalized women and 21% of 402 hospitalized men 40 years of age or older were diabetic, The hospitalization rates among Native: American women with treaty status were five to 20 times greater than those among other women:, which was partially attributable to a signif icantly greater frequency of pregnancy and diabetes in the former wome n, Hospitalization for acute pyelonephritis is common, and pregnancy a nd diabetes contribute substantially to hospitalization rates. The inc reased hospitalization rate among Native American women with treaty st atus is not fully explained by pregnancy or diabetes.