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Published on: June 24, 2025
Validity of the minimum data set in identifying urinary tract infections in residents of long-term care facilities
Kurt B Stevenson1, James W Moore, Barbara Sleeper
1Qualis Health, Boise, Idaho, USA. kurts@qualishealth.org
Objectives:
To determine the validity of the Minimum Data Set (MDS) to detect cases of urinary tract infection (UTI) that meet specific evidence-based criteria.
Design:
Prospective surveillance.
Setting:
Sixteen long-term care facilities (LTCFs) in Idaho.
Participants:
Residents of participating LTCFs for whom an MDS form was completed.
Measurements:
Prospective surveillance of all types of infection, including UTI, and data collection on clinical manifestation, microbiology, and treatment; MDS data on identification of UTI.
Results:
A stratified analysis demonstrated that the validity of MDS was 14% when using the evidence-based criteria for UTIs as the criterion standard. The estimated sensitivity and specificity of MDS entries were 57.9% and 86.5%, respectively. The estimated positive and negative predictive values for the study population were 13.9% and 98.2%, respectively.
Conclusion:
MDS has the potential to be an important measure of quality in the long-term care setting. When used to detect residents with UTIs, it appears to greatly overestimate the number of cases while adequately screening out residents without UTIs. These problems may be overcome by providing more-explicit definitions for UTIs to be used by providers when completing MDS information on individual residents.
Insights
The Minimum Data Set (MDS) overestimates urinary tract infections (UTIs) in long-term care facilities. Improved UTI definitions for providers using MDS could enhance accuracy for quality measurement.
Area of Science:
- Gerontology
- Infectious Diseases
- Health Informatics
Background:
- Urinary tract infections (UTIs) are common in long-term care facilities (LTCFs).
- Accurate detection of UTIs is crucial for quality of care and resident outcomes.
- The Minimum Data Set (MDS) is used for resident assessment in LTCFs.
Purpose of the Study:
- To evaluate the validity of the Minimum Data Set (MDS) in identifying urinary tract infections (UTIs) based on evidence-based criteria.
- To assess the accuracy of MDS for UTI detection in a long-term care setting.
Main Methods:
- Prospective surveillance of infections in 16 Idaho LTCFs.
- Data collection included clinical manifestations, microbiology, and treatment for all infections, including UTIs.
- MDS data on UTI identification was compared against evidence-based criteria.
Main Results:
- The overall validity of MDS for detecting UTIs was 14% against evidence-based criteria.
- MDS demonstrated a sensitivity of 57.9% and specificity of 86.5%.
- Positive predictive value was 13.9%, while negative predictive value was 98.2%.
Conclusions:
- MDS has potential as a quality measure in LTCFs but significantly overestimates UTI cases.
- MDS adequately screens out residents without UTIs.
- Clearer UTI definitions for providers completing MDS are recommended to improve accuracy.
Related Concept Videos
Urine Studies II: Urine Culture and Sensitivity Test
Urinary Tract Infection III: Diagnostic Studies and Interprofessional Care
Automated Microbial Diagnostics
Microbiota of the Urogenital Tract
Urinary Tract Infection I: Introduction
Acute Pyelonephritis II: Diagnostic Studies and Management
