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Challenges in the management of positive fecal occult blood tests.

ABSTRACT: BACKGROUND: Many patients with a positive fecal occult blood test (FOBT) do not undergo follow-up evaluations. OBJECTIVE: To identify the rate of follow-up colonoscopy following a positive FOBT and determine underlying reasons for lack of follow-up. DESIGN: It is a retrospective chart review. PARTICIPANTS: The subject group consisted of 1,041 adults with positive FOBTs within a large physician group practice from 2004 to 2006. MEASUREMENTS: We collected data on reasons for ordering FOBT, presence of prior colonoscopy, completed evaluations, and results of follow-up tests. We fit a multivariable logistic regression model to identify predictors of undergoing follow-up colonoscopy. RESULTS: Most positive FOBTs were ordered for routine colorectal cancer screening (76%), or evaluation of anemia (13%) or rectal bleeding (7%). Colonoscopy was completed in 62% of cases, with one-third of these procedures identifying a colorectal adenoma (29%) or cancer (4%). Factors associated with higher rates of follow-up colonoscopy included obtaining the FOBT for routine colorectal screening (odds ratio (OR) 1.59, 95% confidence interval (CI) 1.11-2.29) and consultation with gastroenterology (OR 1.99, 95% CI 1.46-2.72). Patients were less likely to undergo colonoscopy if they were older than 80 years old (OR 0.54, 95% CI 0.31-0.92), younger than 50 years old (OR 0.44, 95% CI 0.28-0.70), uninsured (OR 0.50, 95% CI 0.27-0.93), or had undergone colonoscopy within the prior five years (OR 0.32, 95% CI 0.23-0.44). CONCLUSIONS: Clinical decisions and patient factors available at the time of ordering an FOBT impact performance of colonoscopy. Targeting physicians' understanding of the use of this test may improve follow-up and reduce inappropriate use of this test.

SUBMITTER: Rao SK

PROVIDER: S-EPMC2642561 | biostudies-other | 2009 Mar

REPOSITORIES: biostudies-other

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Project description:BACKGROUND:Fecal occult blood tests (FOBTs) are recommended by the US Preventive Services Task Force as a screening method for colorectal cancer (CRC), but they are only effective if positive results are followed by colonoscopy. Surprisingly, a large proportion of patients with a positive result do not follow this recommendation. OBJECTIVE:The objective of this study was to examine the effectiveness of text messaging (short message service, SMS) in increasing adherence to colonoscopy follow-up after a positive FOBT result. METHODS:This randomized controlled trial was conducted with patients who had positive CRC screening results. Randomization was stratified by residential district and socioeconomic status (SES). Subjects in the control group (n=238) received routine care that included an alert to the physician regarding the positive FOBT result. The intervention group (n=232) received routine care and 3 text messaging SMS reminders to visit their primary care physician. Adherence to colonoscopy was measured 120 days from the positive result. All patient information, including test results and colonoscopy completion, were obtained from their electronic medical records. Physicians of study patients completed an attitude survey regarding FOBT as a screening test for CRC. Intervention and control group variables (dependent and independent) were compared using chi-square test. Logistic regression was used to calculate odds ratios (ORs) and 95% CIs for performing colonoscopy within 120 days for the intervention group compared with the control group while adjusting for potential confounders including age, gender, SES, district, ethnicity, and physicians' attitude. RESULTS:Overall, 163 of the 232 patients in the intervention group and 112 of the 238 patients in the control group underwent colonoscopy within 120 days of the positive FOBT results (70.3% vs 47.1%; OR 2.17, 95% CI 1.49-3.17; P<.001); this association remained significant after adjusting for potential confounders (P=.001). CONCLUSIONS:A text message (SMS) reminder is an effective, simple, and inexpensive method for improving adherence among patients with positive colorectal screening results. This type of intervention could also be evaluated for other types of screening tests. TRIAL REGISTRATION:ClinicalTrials.gov NCT03642652; https://clinicaltrials.gov/ct2/show/NCT03642652 (Archived by WebCite at http://www.webcitation.org/74TlICijl).

Project description:This study assessed the contribution of organizational structures and processes identified from facility surveys to follow-up for positive fecal occult blood tests [FOBT-positive (FOBT(+))].We identified 74,104 patients with FOBT(+) results from 98 Veterans Health Administration (VHA) facilities between August 16, 2009 and March 20, 2011, and followed them until September 30, 2011, for completion of colonoscopy. We identified patient characteristics from VHA administrative records, and organizational factors from facility surveys completed by primary care and gastroenterology chiefs. We estimated predictors of colonoscopy completion within 60 days and six months using hierarchical logistic regression models.Thirty percent of patients with FOBT(+) results received colonoscopy within 60 days and 49% within six months. Having gastroenterology or laboratory staff notify gastroenterology providers directly about FOBT(+) cases was a significant predictor of 60-day [odds ratio (OR), 1.85; P = 0.01] and six-month follow-up (OR, 1.25; P = 0.008). Additional predictors of 60-day follow-up included adequacy of colonoscopy appointment availability (OR, 1.43; P = 0.01) and frequent individual feedback to primary care providers about FOBT(+) referral timeliness (OR, 1.79; P = 0.04). Additional predictors of six-month follow-up included using guideline-concordant surveillance intervals for low-risk adenomas (OR, 1.57; P = 0.01) and using group appointments and combined verbal-written methods for colonoscopy preparation instruction (OR, 1.48; P = 0.0001).Directly notifying gastroenterology providers about FOBT(+) results, using guideline-concordant adenoma surveillance intervals, and using colonoscopy preparations instruction methods that provide both verbal and written information may increase overall follow-up rates. Enhancing follow-up within 60 days may require increased colonoscopy capacity and feedback to primary care providers.These findings may inform organizational-level interventions to improve FOBT(+) follow-up.

Project description:Background:Fecal immunochemical testing is the most commonly used method for colorectal cancer screening worldwide. However, its effectiveness is frequently undermined by failure to obtain follow-up colonoscopy after positive test results. Purpose:To evaluate interventions to improve rates of follow-up colonoscopy for adults after a positive result on a fecal test (guaiac or immunochemical). Data Sources:English-language studies from the Cochrane Central Register of Controlled Trials, PubMed, and Embase from database inception through June 2017. Study Selection:Randomized and nonrandomized studies reporting an intervention for colonoscopy follow-up of asymptomatic adults with positive fecal test results. Data Extraction:Two reviewers independently extracted data and ranked study quality; 2 rated overall strength of evidence for each category of study type. Data Synthesis:Twenty-three studies were eligible for analysis, including 7 randomized and 16 nonrandomized studies. Three were at low risk of bias. Eleven studies described patient-level interventions (changes to invitation, provision of results or follow-up appointments, and patient navigators), 5 provider-level interventions (reminders or performance data), and 7 system-level interventions (automated referral, precolonoscopy telephone calls, patient registries, and quality improvement efforts). Moderate evidence supported patient navigators and provider reminders or performance data. Evidence for system-level interventions was low. Seventeen studies reported the proportion of test-positive patients who completed colonoscopy compared with a control population, with absolute differences of -7.4 percentage points (95% CI, -19 to 4.3 percentage points) to 25 percentage points (CI, 14 to 35 percentage points). Limitation:More than half of studies were at high or very high risk of bias; heterogeneous study designs and characteristics precluded meta-analysis. Conclusion:Patient navigators and giving providers reminders or performance data may help improve colonoscopy rates of asymptomatic adults with positive fecal blood test results. Current evidence about useful system-level interventions is scant and insufficient. Primary Funding Source:National Cancer Institute. (PROSPERO: CRD42016048286).

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Challenges in the management of positive fecal occult blood tests.

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