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A Case-Control Study

Lynn W. Herzog, MD, MPH

Am J Dis Child. 1989;143(3):348-350.

Abstract
• It has been shown that uncircumcised infants have a higher rate of urinary tract infections in the first few months of life. To investigate further the association between noncircumcision and urinary tract infections, a case-control study was performed of infant boys who had a catheterized or suprapubic urine culture done as part of an acute illness visit. Cases (n = 36) were those infants who had a positive culture (>105 organisms per milliliter); controls (n=76) had a negative culture(<103 organisms per milliliter). There were no significant differences found in the two groups in age, ethnic group, and type of medical insurance. All of the cases were uncircumcised, vs 32% of controls. The data were analyzed separately by age, ethnic group, type of insurance, and method of culture, and in all groups the cases were significantly more likely to be uncircumcised. Of the 31 cases who underwent roentgenographic investigations, 8 had abnormal findings. Noncircumcision seems to be a highly significant risk factor for urinary tract infection in infants up to 12 months of age, affects infants regardless of race and socioeconomic status, and is associated with anatomic abnormalities in 26% of cases.

(AJDC. 1989;143:348-350)

Author Affiliations
From the Division of Ambulatory Pediatrics, The Children's Hospital, and the Department of Pediatrics, Harvard Medical School, Boston, Mass. Presented in part at the Annual Meeting of the Ambulatory Pediatric Association, Washington, DC, May 3, 1988.

Footnotes
Accepted for publication November 19, 1988.

Reprint requests to Comprehensive Child Health Program, Children's Hospital, 300 Long-wood Ave, Boston, MA 02115 (Dr Herzog).

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