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CompletedNCT02797613Updated Feb 27, 2020Results posted

Restricted Reporting for Positive Urine Cultures

An interventional study of Restricted Reporting in Bacteriuria and Urinary Tract Infection, sponsored by Memorial University of Newfoundland. Completed at 1 site in Canada. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2020-02-27.

Sponsored by Memorial University of Newfoundland · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
110
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

Asymptomatic bacteriuria (AB) is a condition in which bacteria are detected in urine culture without urinary symptoms. The inappropriate use of antibiotic treatment for AB selects bacterial flora to express resistance mutations. Reducing inappropriate antibiotic use for AB is difficult, since the microbiology laboratory cannot distinguish patients with AB. The investigators study will use a restricted laboratory report requesting the physician to call the laboratory for culture results. The restricted report may reduce the rate of inappropriate treatment of AB.

Read the detailed description

Positive urine cultures during the study period will be randomized to restricted microbiology laboratory reporting or standard microbiology laboratory reporting. Physician or patient consent will not be collected. Patient records will be assessed by the investigator to determine if patients have AB or urinary tract infection. Physician antibiotic treatment decision in both groups will be collected.

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Conditions studied

  • Bacteriuria
  • Urinary Tract Infection
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In context

Bacteriuria

51 studies on the registry are indexed under Bacteriuria; 3 are open to participants now.

This study's enrollment of 110 is close to the median of 100 across 37 interventional studies indexed under Bacteriuria.

Browse Bacteriuria studies →

Lead sponsor

Memorial University of Newfoundland is the lead sponsor of 49 studies on the registry; 5 are open to participants now.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • positive urine culture from inpatients at Health Sciences Centre or St. Clare's Mercy Hospital or outpatients during study period.

Exclusion criteria

Exclusion Criteria:

  • pregnancy,
  • antibiotic treatment at the time of urine collection,
  • collection from an indwelling catheter,
  • admission to long term care facility.
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Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Care provider)
Enrollment
110 participants (actual)

Study arms

  • Experimental
    Restricted Reporting

    Microbiology laboratory will report "Positive urine cultures may represent asymptomatic bacteriuria or urinary tract infection. If urinary tract infection is suspected clinically, please call 777-xxxx (researcher mobile phone) for identification and susceptibility results"

    Behavioral: Restricted Reporting

  • No intervention
    Standard Reporting

    Microbiology laboratory will report identification and susceptibility results

Interventions

  • BehavioralRestricted Reporting

    An abbreviated version of the microbiology report indicating that growth is present and the physician should call the lab for further details if clinically important

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What researchers measure

Primary outcomes

  1. The Number of Patients Receiving Appropriate Treatment

    Sum of urinary tract infection treated and asymptomatic bacteriuria not treated

    Time frame: 72 hours from positive culture

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Results

Posted Feb 27, 2020
Limitations and caveats
Our design is a proof-of-concept which will require additional trials to verify. It would be impractical to manually screen all inpatient urine specimens using our inclusion criteria, although automated eligibility screening may be possible.

Participant flow

Participant flow — Overall Study
MilestoneRestricted ReportingStandard Reporting
Started5555
Completed5555
Not completed00

Outcome measures

PrimaryThe Number of Patients Receiving Appropriate Treatment

Sum of urinary tract infection treated and asymptomatic bacteriuria not treated

Time frame:
72 hours from positive culture
Reported as:
Count of participants · Participants
The Number of Patients Receiving Appropriate Treatment
ParticipantsRestricted ReportingStandard Reporting
The Number of Patients Receiving Appropriate Treatment4429

Adverse events

Collected over 7 days after positive urine culture. Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Restricted Reporting2/55 (3.6%)0/55 (0%)7/55 (12.7%)
Standard Reporting1/55 (1.8%)0/55 (0%)9/55 (16.4%)
Most frequent other events
Most frequent other events
EventRestricted ReportingStandard Reporting
TachycardiaCardiac disorders4/555/55
Altered Mental StatusNervous system disorders2/555/55
Elevated White Blood Cell CountBlood and lymphatic system disorders0/553/55
TachypneaRespiratory, thoracic and mediastinal disorders0/553/55
BacteremiaBlood and lymphatic system disorders1/552/55
EdemaBlood and lymphatic system disorders1/551/55
Abnormal Body TemperatureGeneral disorders0/550/55
HyperglycaemiaEndocrine disorders0/550/55

Baseline characteristics

110 Results randomized. All randomized results were analysed.

Age, Continuous
Age, Continuous(years)Restricted ReportingStandard ReportingTotal
Mean67.7 ± 16.368.6 ± 16.068.1 ± 16.1
Sex: Female, Male
Sex: Female, Male(Participants)Restricted ReportingStandard ReportingTotal
Female353671
Male201939
Race and Ethnicity Not Collected
Race and Ethnicity Not Collected(Participants)Restricted ReportingStandard ReportingTotal
Count of participants——0
Region of Enrollment
Region of Enrollment(participants)Restricted ReportingStandard ReportingTotal
Canada5555110
Asymptomatic Bacteriuria
Asymptomatic Bacteriuria(Participants)Restricted ReportingStandard ReportingTotal
Count of participants354176
08

Study locations

1 site
  • Health Sciences Center
    Saint John's, Newfoundland and Labrador A1B3V6, Canada
09

References and documents

Publications

  • Daley P, Garcia D, Inayatullah R, Penney C, Boyd S. Modified Reporting of Positive Urine Cultures to Reduce Inappropriate Treatment of Asymptomatic Bacteriuria Among Nonpregnant, Noncatheterized Inpatients: A Randomized Controlled Trial. Infect Control Hosp Epidemiol. 2018 Jul;39(7):814-819. doi: 10.1017/ice.2018.100. Epub 2018 May 28. PubMed 29804552 ↗

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

Individual participant data

Plan to share: No

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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Feb 27, 2020, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT02797613
Lead sponsor
Memorial University of Newfoundland
Responsible party
Peter Daley (Assistant Professor, Memorial University of Newfoundland) — Principal investigator
First posted
Jun 13, 2016
Start date
Jan 1, 2017
Primary completion
May 1, 2017
Completion
May 1, 2017
Results posted
Feb 27, 2020
Last update
Feb 27, 2020

Study contacts

Peter Daley, MD FRCPC
principal investigator · Memorial University

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Feb 2020. You cannot join it, but the record below documents what was studied.

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