Screening for asymptomatic bacteriuria in adults: evidence for the U.S. Preventive Services Task Force reaffirmation recommendation statement.
BACKGROUND
Asymptomatic bacteriuria is common, and screening for this condition in pregnant women is a well-established, evidence-based standard of current medical practice. Screening other groups of adults has not been shown to improve outcomes.


OBJECTIVE
To review new and substantial evidence on screening for asymptomatic bacteriuria, to support the work of the U.S. Preventive Services Task Force.


METHODS
English-language studies of adults (age >18 years) indexed in PubMed and the Cochrane Library and published from 1 January 2002 through 30 April 2007.


METHODS
For benefits of screening or treatment for screened populations, systematic reviews; meta-analyses; and randomized, controlled trials were included. For harms of screening, systematic reviews; meta-analyses; randomized, controlled trials; cohort studies; case-control studies; and case series of large multisite databases were included. Two reviewers independently reviewed titles, abstracts, and full articles for inclusion.


METHODS
Two reviewers extracted data from studies on benefits of screening and treatment (including decreases in the incidence of adverse maternal and fetal outcomes, symptomatic urinary tract infections, hypertension, and renal function decline).


RESULTS
An updated Cochrane systematic review of 14 randomized, controlled trials of treatment supports screening for asymptomatic bacteriuria in pregnant women. A randomized, controlled trial and a prospective cohort study show that screening nonpregnant women with diabetes for asymptomatic bacteriuria is unlikely to produce benefits. No new evidence on screening men for asymptomatic bacteriuria or on harms of screening was found.


CONCLUSIONS
The focused search strategy may have missed some smaller studies on the benefits and harms of screening for asymptomatic bacteriuria.


CONCLUSIONS
The available evidence continues to support screening for asymptomatic bacteriuria in pregnant women, but not in other groups of adults.
Lin
Kenneth
K
Center for Primary Care, Prevention, and Clinical Partnerships, Agency for Healthcare Research and Quality, Rockville, Maryland 20850, USA. kenneth.lin@ahrq.hhs.gov
Fajardo
Kevin
K
D000328:Adult; D001437:Bacteriuria / Q000175:diagnosis* / Q000188:drug therapy; D005260:Female; D006801:Humans; D008297:Male; D008403:Mass Screening / Q000009:adverse effects; D011247:Pregnancy; D011251:Pregnancy Complications, Infectious / Q000175:diagnosis / Q000188:drug therapy