Related Experiment Video
Updated: Feb 10, 2026

Measuring Frailty in HIV-infected Individuals. Identification of Frail Patients is the First Step to Amelioration and Reversal of Frailty
Published on: July 24, 2013
Frailty Assessment Predicts Acute Outcomes in Patients Undergoing Screening Colonoscopy
Sasha Taleban1,2, Nima Toosizadeh3,4,5, Shilpa Junna3
1College of Medicine, University of Arizona, 1501 N. Campbell Ave, Tucson, AZ, 85718, USA. staleban@deptofmed.arizona.edu.
Frailty assessment effectively predicts adverse outcomes during colonoscopy in older adults, outperforming age and comorbidity indices. Routine frailty screening can improve risk stratification for patients undergoing this common endoscopic procedure.
Area of Science:
- Gerontology
- Gastroenterology
- Clinical Medicine
Background:
- Colonoscopy, a key colorectal cancer screening tool, carries risks, especially for an aging population.
- Existing methods for assessing patient risk before colonoscopy are limited.
- Frailty, a decline in physiological function, is known to predict surgical risks but its role in endoscopy is not well understood.
Purpose of the Study:
- To evaluate the effectiveness of frailty assessment in predicting adverse events during colonoscopy.
- To compare the predictive power of frailty against traditional risk factors like age and comorbidity indices.
Main Methods:
- A prospective cohort study enrolled 99 adults aged 50 years and older undergoing screening colonoscopy.
- Frailty was measured using a validated 20-second upper-extremity frailty test.
- Data on demographics, American Society of Anesthesiologists (ASA) status, Charlson Comorbidity Index (CCI), and adverse events were collected and analyzed.
Main Results:
- Of 99 participants, 50 were pre-frail/frail, and 55 experienced 87 adverse events.
- Frailty status (p=0.01) and ASA status (p=0.02) were significant predictors of colonoscopy adverse events.
- Neither age nor CCI predicted colonoscopy outcomes in this cohort.
Conclusions:
- Frailty status is a stronger predictor of colonoscopy outcomes in older adults than age or CCI.
- Routine frailty screening should be considered for risk stratification in patients undergoing colonoscopy.
- Further research is needed to fully elucidate the role of frailty in predicting endoscopic adverse events.
More Related Videos
Related Concept Videos
Predicting Reaction Outcomes
Endoscopic Procedures II: Colonoscopy
Predicting Molecular Geometry
Outcomes of Glycolysis
Cellular respiration can occur aerobically (with oxygen) or anaerobically (without oxygen). In the presence of oxygen, cellular respiration starts with glycolysis and continues with pyruvate...
Prediction Intervals
However, the point estimate is most likely not the exact value of the population parameter, but close to it. After calculating point estimates, we construct interval estimates, called confidence intervals or prediction intervals. This prediction interval comprises a range of values unlike the point estimate and is a better predictor of the observed sample value, y.
Guidelines for Writing Outcome
Patient outcomes reflect the patient's response to the goal rather than what the nurse aims to achieve. Terminology should be observable and measurable to avoid the reader's interpretation. The desired outcome should be realistic and achievable in the designated care timeframe. Expected outcomes should align with adjunctive therapies. The outcome should enhance care...

