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PubMed2003

A comparison of self-reported colorectal cancer screening with medical records.

The purpose of this study was to compare self-reports of colorectal cancer (CRC) screening by fecal occult blood test (FOBT), sigmoidoscopy, and colonoscopy with medical records in a multiprovider health care setting. Relatives of CRC patients residing in Ontario, Canada completed a questionnaire indicating whether or not they had ever had any CRC screening tests. Medical records from physician's offices and hospitals were compared with the self reports, and where possible, reasons were obtained for nonmatching reports. Medical records for colonoscopies were readily available from various sources, and self-reports of this procedure were very accurate (kappa statistic for agreement beyond chance = 0.87). For sigmoidoscopy and FOBT, the agreement was poorer (kappa = 0.29 and 0.32, respectively); however, there were difficulties in obtaining records for these two procedures. Sigmoidoscopy procedures that took place many years ago were difficult to document, and physician's offices were unable to provide FOBT reports in many cases. Self-reports of colonoscopy were very accurate in this population, whereas self-reports of sigmoidoscopy and FOBT are somewhat less accurate, although this is likely due to challenges in obtaining a confirmatory record rather than an overreporting of tests. In a multiprovider publicly insured health care setting such as Canada, using self-reported information is likely to provide sufficiently accurate information for colonoscopy, but for other CRC screening tests, there may be difficulty in obtaining true estimates of the frequencies of these procedures.

Colonoscopy↗

PubMed1992

Diagnostic yield from barium enemas: a study among patients referred by general practitioners and hospital outpatient departments.

Although the double contrast barium enema is the standard radiological examination of the colon, it is not universally available to patients referred by their general practitioners. A retrospective survey of all double contrast barium enemas carried out over a two year period in one health district was undertaken to determine the diagnostic yield of pathological findings for patients referred by general practitioners and hospital outpatient departments and for patients who had rigid sigmoidoscopy prior to the enema and those who did not. A total of 530 patients were studied. The diagnostic yield for the hospital outpatients was 41.6% and in the general practitioner group 35.6%. In the patients who had rigid sigmoidoscopy the yield was 42.7% compared with 32.6% in those who had no prior sigmoidoscopy. It is concluded that the withdrawal of direct access for barium enemas to general practitioner patients in this district because of a low diagnostic yield cannot be justified. The lower diagnostic yield in the patients who did not have sigmoidoscopy supports the policy of requiring this examination prior to all barium enemas.

Ambulatory Care↗

PubMed2005

[The nurse as endoscopist].

INTRODUCTION: A new diagnostic strategy for evaluation of patients with symptoms suggestive of colorectal cancer involves an increased use of flexible sigmoidoscopy. The number of endoscopists is declining, and therefore we found it interesting to describe a endoscopy training programme for the first two Danish nurses. MATERIALS AND METHODS: Two nurses were enrolled in a five-module practical training programme including a multiple-choice test and simulator training. After their completion of at least 100 sigmoidoscopies, a questionnaire on patient satisfaction was administered together with recording of technical details of the sigmoidoscopies during a three-month period. RESULTS: During the three-month period, the nurses performed 69 sigmoidocopies. Of these, 88% reached a triangular lumen, the median examination time was 25 minutes, intubation of the sigmoid was successful in all cases and video review of the sigmoidoscopies revealed that no significant pathology had been misdiagnosed. Patient satisfaction among those examined by nurses showed that fewer patients experienced pain during the endoscopy than those examined by doctors. DISCUSSION: The training programme was completed as planned, and the nurses obtained endoscopic skills comparable to that of doctors concerning patient satisfaction. Sigmodoscopy can be performed at an acceptably high standard by nurses. Training nurses to perform endoscopy requires a significant number of teaching hours and close supervision.

Clinical Competence↗

PubMed1991

Screening for colon malignancy with colonoscopy.

Screening of asymptomatic individuals for colon malignancy has been advocated for the past 20 yr in the hopes of reducing colon cancer mortality. Although sigmoidoscopy is an important element of current screening recommendations, the sensitivity of this test in asymptomatic subjects has never been studied. The purpose of this study was to determine the prevalence and location of polyps and cancers in an asymptomatic population by performing full colonoscopy. We wished to assess the sensitivity of screening flexible sigmoidoscopy to 60 cm by determining how many patients with adenomas or cancer had "index" adenomatous polyps in the distal 60 cm. One hundred five healthy male outpatients, over 50 yr old, with negative examinations for occult blood in stools and no prior history of colon pathology, had full colonoscopy. Careful examination of the distal 60 cm was performed, followed by a full colon examination to the cecum. Forty-three patients (41%) had adenomatous polyps, and only 19 of these patients had an index adenomatous polyp in the distal 60 cm. Therefore, the sensitivity of sigmoidoscopy was 44%. The prevalence of adenomas increased with age. Patients were assigned to one of three groups based on the findings in the distal 60 cm. Group 1 (n = 65) had no polyps in the distal 60 cm, but 18 of these patients (28%) had adenomatous polyps in the proximal colon. Among 21 patients with only hyperplastic polyps in the distal 60 cm (group 2), six patients (29%) had proximal adenomas. In group 3, eight of 19 patients (42%) with adenomas in the distal 60 cm also had proximal adenomatous polyps. We conclude that adenomatous polyps are common in asymptomatic men who have negative tests for fecal occult blood. Sigmoidoscopy to 60 cm had a sensitivity of only 44% in this patient population, suggesting that this is an insensitive test for the detection of patients with adenomatous polyps.

Aged↗

PubMed1994

Screening for colorectal cancer.

This paper reviews studies on fecal occult blood testing and sigmoidoscopy screening for colorectal cancer. Recently published data from a randomized controlled trial provides the first concrete evidence that annual screening for fecal occult blood can reduce colorectal cancer mortality by at least 33%. These results are corroborated by a nonrandomized but controlled study that showed a 43% colorectal cancer mortality reduction with early detection through fecal occult blood testing and sigmoidoscopy, and by a case-control study that showed a 31% colorectal cancer mortality reduction associated with fecal occult blood testing. Persuasive data to support screening recommendations for sigmoidoscopy are not yet available; however, results from observational studies are suggestive and should stimulate further research to assess the benefit of sigmoidoscopy screening.

Adult↗

PubMed1995

Retroflexion of the sigmoidoscope for the detection of rectal cancer.

Flexible sigmoidoscopy is a procedure that is commonly used by primary care physicians for the evaluation of rectal disorders and for colorectal screening. Retroflexion of the endoscope improves views of the anorectum and rectal vault, which increases the diagnostic yield of sigmoidoscopy. We report three cases of rectal lesions that were not detected when flexible sigmoidoscopy was performed without retroflexion. The lesions were all malignant or premalignant. The illustrative cases demonstrate the value of retroflexion in flexible sigmoidoscopy for the detection of rectal lesions.

Adenocarcinoma↗

PubMed1997

History of visible rectal bleeding in a primary care population. Initial assessment and 10-year follow-up.

OBJECTIVE: To determine whether a complaint of visible rectal bleeding that is elicited by a screening review of systems merits investigation and to assess the accuracy of a defined protocol to evaluate bleeding. DESIGN: Prospective cohort study. SETTING: Primary care clinics in a veterans medical center. PATIENTS: We used an 8-item review of systems to identify 297 individuals with visible rectal bleeding; 201 (68%) of these individuals completed a specified protocol consisting of double-contrast barium enema (DCBE) examination, rigid sigmoidoscopy, and follow-up visit after 6 to 12 months. Ten years later we verified the diagnosis in 131 (93%) of 141 patients whose initial evaluation suggested no cause, or a benign anorectal cause, of bleeding. MAIN OUTCOME MEASURES: Final diagnoses after 2 and 10 years; sensitivity and specificity of symptoms, DCBE, and rigid sigmoidoscopy. RESULTS: We diagnosed serious disease in 48 (24%) of the 201 patients; 26 had polyps, 9 had inflammatory bowel disease, and 13 (6.5%) had colon cancer. Symptoms did not predict the diagnosis. Neither DCBE nor rigid sigmoidoscopy alone was sufficiently sensitive to be used alone, but the combination of DCBE and rigid sigmoidoscopy had a sensitivity of 0.96 and a specificity of 0.76 for the diagnosis of polyps, cancer, or inflammatory bowel disease. CONCLUSIONS: Self-reported rectal bleeding detected by means of a review of systems was associated with a high likelihood of important pathology. Physicians should ask all adults about visible rectal bleeding and should visualize the entire colon in those who report bleeding.

Adult↗

PubMed1997

Patient preferences for colorectal cancer screening.

BACKGROUND: New guidelines include several options for colorectal cancer screening. The goal of this study was to assess patient preferences for five approaches: no screening, fecal occult blood testing (FOBT), flexible sigmoidoscopy, barium enema, and colonoscopy. METHODS: Patients from offices of primary care providers listened to a scripted oral presentation while viewing a table describing five screening methods and their outcomes. Immediately following the presentation, the subjects completed a questionnaire assessing their most preferred screening option and their likelihood of undergoing each option. RESULTS: One hundred subjects aged 50 to 75 years participated. The average age was 64 years; 54 of the subjects were women, and 87 were white. Ninety-six percent of patients preferred to be screened by some method. When asked which test they would choose as their primary method of screening, 38% preferred colonoscopy, 31% preferred FOBT, 14% preferred barium enema, and 13% preferred flexible sigmoidoscopy. When asked how likely they would be to undergo each procedure on a 5-point scale, patients rated FOBT highest with an average score of 4.4, followed by colonoscopy (3.4), barium enema (3.4), flexible sigmoidoscopy (3.4), and no screening (1.5). Acceptance rates for these tests when recommended by their physician were 96% (FOBT), 82% (flexible sigmoidoscopy), 92% (barium enema), and 86% (colonoscopy). CONCLUSIONS: Patients indicated a strong preference for colorectal cancer screening, but they did not indicate a dominant preference for any single screening test. Physicians need to take into account individual patient preferences when making recommendations regarding colorectal cancer screening.

Aged↗

PubMedDate not supplied

Performance of gastrointestinal tract endoscopy by primary care physicians. Lessons from the US Medicare database.

Primary care physicians, including family physicians, often perform flexible sigmoidoscopy in their clinical practices. It is unknown how many of these and other endoscopic procedures, such as esophagogastroduodenoscopy and colonoscopy, are performed by these physicians. Therefore, physician reimbursement by the Medicare program was documented for selected endoscopic procedures during the calendar year 1993. Family physicians and general practitioners in the United States were reimbursed for 125,821 flexible sigmoidoscopies, 21,070 upper gastrointestinal tract endoscopic procedures, and 23,841 colonoscopies. General internists performed considerably more endoscopic procedures than did family physicians. Primary care physicians performed 44% of the reimbursable flexible sigmoidoscopies, 17% of upper gastrointestinal tract endoscopies, and 15% of colonoscopies in this patient group. In 1993, primary care physicians generated a total of $175 million in allowed charges by the Medicare program for gastrointestinal tract endoscopic procedures, of which $22.6 million was to general practitioners and family physicians. Family physicians, on average, charged less for gastrointestinal tract endoscopic procedures than did other physician specialists. Primary care physicians, especially general internists, are providing substantial numbers of gastrointestinal tract endoscopic services to their patients. As Medicare does not generally reimburse physicians to perform flexible sigmoidoscopy for colorectal cancer screening, it is likely that primary care physicians performed considerably more procedures than were documented in this study.

Colonoscopy↗

PubMed2006

Colorectal cancer screening among Mexican Americans at a community clinic.

BACKGROUND: Mexican Americans tend to under-utilize colorectal cancer (CRC) prevention. Yet little is known about sociocultural factors associated with CRC screening. This study assessed predictors of three primary CRC tests among low-income Mexican Americans. METHODS: From May to December 2003, an availability sample of 287 patients, aged 50 to 89 years, who presented for routine care at a community health center near the U.S.-Mexico border completed surveys on CRC knowledge, awareness, attitudes toward screening, logistic barriers, perceptions of health, locus of control, acculturation, whether their doctor discussed CRC screening, and sociodemographics. Participants also reported whether they had ever had a fecal occult blood test, flexible sigmoidoscopy, or colonoscopy. Logistic regression identified predictors of having had these tests. RESULTS: Overall, 41% reported having ever had any of the three tests; 34.1% had a fecal occult blood test; 6.6%, flexible sigmoidoscopy; and 11.8%, colonoscopy. Few respondents reported any clear knowledge about CRC, and only 41% said their doctor had ever discussed screening with them. Yet "doctor discussed screening" was the only consistent screening predictor across tests. CRC knowledge (p=0.006) and insurance coverage (p=0.009) predicted having had a flexible sigmoidoscopy. Perceptions of general poor health also predicted having had a flexible sigmoidoscopy or a colonoscopy (p=0.04). Being employed marginally predicted whether patient had ever had any of the three tests (p=0.05). CONCLUSIONS: Results show that even those in contact with community medical services exhibit low CRC screening rates. They further suggest that interventions focused on clinical settings are an important first step toward CRC prevention in this community.

Acculturation↗

PubMed1996

Neoplasia distal to the splenic flexure in patients with proximal colon cancer.

BACKGROUND: Current American Cancer Society recommendations are that persons aged 50 years or older undergo screening flexible sigmoidoscopy every 3 to 5 years. In clinical practice, persons with adenomas at sigmoidoscopy are generally referred for full colonoscopy. However, cancers proximal to the splenic flexure may not be accompanied by neoplasia distal to the splenic flexure. METHODS: In order to estimate how often screening flexible sigmoidoscopy would be negative in persons with proximal cancer, we retrospectively reviewed 2053 consecutive colorectal cancer cases diagnosed from 1988 to 1994. Seven hundred ninety-nine (38.9%) had tumors proximal to the splenic flexure. We selected 358 study cases based on full colonoscopy performed and the colonoscopy reports available. RESULTS: Colonoscopy demonstrated distal adenomas in 77 cases (21.5%): 29 (8.1%) had hyperplastic polyps only, 4 (1.1%) had synchronous cancer, and 248 (69.3%) had no distal polyps. In this population, 77.4% of patients with proximal colon cancer had no distal neoplasia. We estimate that 30% of all patients with colorectal cancer would have a negative screening flexible sigmoidoscopy. CONCLUSIONS: Prospective evaluation of colonoscopic findings in persons with proximal cancers is needed. Ongoing evaluation of colonoscopy as a general screening test is appropriate.

Adenocarcinoma↗

PubMed2003

The fetal safety and clinical efficacy of gastrointestinal endoscopy during pregnancy.

More than 12,000 pregnant patients in the United States per annum have conditions that are normally evaluated by EGD. More than 6000 pregnant patients in the United States per annum have conditions that are normally evaluated by sigmoidoscopy or colonoscopy. About one thousand more have symptomatic choledocholithiasis during pregnancy, which is a strong indication for endoscopic sphincterotomy in nonpregnant patients. Endoscopy during pregnancy raises the unique issue of fetal safety. Endoscopic medications comprise a significant component of fetal endoscopic risks. Safety of EGD during pregnancy has been examined in a case-controlled study of 83 patients, a mailed survey of 73 patients, and 28 case reports. Safety of sigmoidoscopy during pregnancy has been examined in a case-controlled study of 46 patients, a mailed survey of 13 patients, and 10 case reports. Safety of therapeutic ERCP during pregnancy has been analyzed in studies of 23, 10, 6, and 5 patients, and in 32 case reports. These studies suggested that EGD, sigmoidoscopy, and ERCP should be performed when strongly indicated: EGD for significant upper gastrointestinal bleeding, sigmoidoscopy for nonhemorrhoidal rectal bleeding, and ERCP for symptomatic choledocholithiasis when sphincterotomy is contemplated. PEG and colonoscopy are currently considered experimental during pregnancy because of insufficient data on fetal safety. Several cases of PEG and colonoscopy were successfully performed during pregnancy. Performance of endoscopy during pregnancy should increase with further technical refinements, and greater awareness of procedure safety.

Endoscopy, Digestive System↗

PubMed1982

Surveillance for colorectal cancer in average-risk patients, familial high-risk groups, and patients with adenomas.

New concepts and technological advances have stimulated a heightened interest in the secondary prevention of colorectal cancer; the identification and eradication of premalignant lesions, and the detection of early cancer before the development of life-threatening consequences. This approach must be selective based on risk factors. Fecal occult blood testing and sigmoidoscopy have been applied to the average-risk patients, whereas x-rays, endoscopy, biopsy, and cytology have been applied to the high-risk groups for case findings and screening. Program results to date are encouraging for average-risk patients. Compliance with fecal occult blood testing and sigmoidoscopy has been high in motivated groups self-selected for entry into screening programs. The rate of positive slides, false-positivity, and predictive value for neoplasia has been acceptable. Dukes' staging of cancers has been favorable. False-negativity and mortality data are not yet available. Flexible sigmoidoscopy has been shown to be an effective substitute for rigid sigmoidoscopy in trained hands. Familial polyposis and Gardner's syndrome families have been well studied, but interest in the nonpolyposis inherited colon cancer families is relatively new. Followup procedures after polypectomy have been variable and only recently has there been an organized attempt to prospectively study the effectiveness of different followup plans. The National Polyp Study has been developed to address this issue.

Adenoma↗

PubMed1994

[Rectoscopy and Hemoccult-II as initial diagnosis. A procedure in patients with symptoms of irritable colon].

The diagnostic accuracy for colorectal cancer (CRC) of rigid sigmoidoscopy and faecal occult blood test (Hemoccult-II) (H-II) was investigated in patients with irritable bowel syndrome in general practice in a three year period and the results were compared with those of the previous three years, where rigid sigmoidoscopy and double contrast barium enema (DCBE) were the initial preferred examinations. Colonoscopy was recommended in patients with positive H-II, but also in patients with repeated negative H-II within three months, provided that the symptoms persisted. CRC was detected in 141 of 630 patients with positive H-II and in 52 of 8697 with negative H-II. The number of CRC's in the two study periods was similar, in spite of a pronounced reduction in DCBE's from 12,196 to 5656 and a small increase in colonoscopies from 3053 to 4127. It was concluded that the new strategy was no worse than the previous one and the major savings in DCBE's could be used to exchange the rigid sigmoidoscopy with a 60 cm flexible sigmoidoscopy, increasing diagnostic accuracy, shortening delay of diagnosis and removing more adenomas, which eventually may reduce the future incidence of CRC and thereby the mortality from CRC.

Adenoma↗

PubMed1997

Five-year follow-up of asymptomatic patients with negative fecal occult blood test results in whom clinically significant colorectal pathology was detected.

OBJECTIVES: To determine from a 5-yr longitudinal study (a) rate of compliance with follow-up, (b) number of new clinically significant colorectal lesions discovered by sigmoidoscopy or colonoscopy at later examination, (c) number and causes of deaths, and (d) rate of diagnosis of new cancers among 36 asymptomatic patients with negative fecal occult blood tests in whom clinically significant colorectal lesions were found initially by 60-cm flexible sigmoidoscope. METHODS: For the 36 patients, medical records were reviewed throughout the 5-yr study period. These records included pathology reports, results from 60-cm sigmoidoscopy and colonoscopy examinations, and notations from visits to health facilities for reasons other than colorectal examinations. RESULTS: Seventy-one clinically significant lesions were removed during the 5-yr period; 58 were discovered by sigmoidoscopy and 13 by colonoscopy. Also, during the 5-yr period, noncolorectal cancer was diagnosed in six patients, and two patients died of cardiac disease. CONCLUSIONS: Patients who have clinically significant colorectal pathology found by 60-cm sigmoidoscope have a high prevalence of lesions beyond the view of this instrument. Therefore, colonoscopy should be performed when sigmoidoscopy shows clinically significant pathology. Because subsequent examinations show a high incidence of new lesions, rescreening is indicated.

Aged↗

PubMed2001

Cost-effectiveness of endoscopy in irritable bowel syndrome.

BACKGROUND: It is unknown to what extent at what expense flexible sigmoidoscopy and colonoscopy add to the diagnosis of irritable bowel syndrome (IBS). The aim of the study was to assess the incremental cost-effectiveness of endoscopic procedures in the workup for IBS. METHODS: Using the Bayes formula, we calculated the increase in diagnostic certainty for a consecutive number of tests. We also calculated the incremental cost-effectiveness ratio, which corresponds to the test costs divided by the increment in diagnostic certainty. RESULTS: The diagnosis of IBS can be established with a relatively high probability of more than 80% relying on relatively inexpensive and noninvasive tests only. Flexible sigmoidoscopy or colonoscopy constitute the most costly portion of any workup for IBS, which amounts to 50% to 75% of the overall costs. Because of their high incremental cost-effectiveness ratio, endoscopic procedures should not be used at the beginning of the diagnostic workup. This outcome of the analysis remains largely unaffected within reasonable ranges of the sensitivity and specificity of various tests. CONCLUSIONS: In the diagnosis of IBS, inexpensive, noninvasive tests should be used first to rule out other diagnoses. Despite their high incremental cost-effectiveness ratio, flexible sigmoidoscopy and colonoscopy are indicated when a serious organic disease is reasonably likely and needs to be ruled out.

Colonic Diseases, Functional↗

PubMed2006

The use of screening colonoscopy for patients cared for by the Department of Veterans Affairs.

BACKGROUND: Medicare data indicate an increase in colorectal cancer (CRC) screening using colonoscopy and a decline in fecal occult blood testing, flexible sigmoidoscopy, and double-contrast barium enema. Because of differences in the delivery of health care, this trend in use of colonoscopy in fee-for-service settings might not be paralleled in the Department of Veterans Affairs (VA). METHODS: National inpatient and outpatient VA databases were searched for codes indicative of colonoscopy, flexible sigmoidoscopy, fecal occult blood testing, and double-contrast barium enema during fiscal years 1998 to 2003 among VA users aged 49 to 75 years. RESULTS: The frequency of tests for CRC screening increased from 432,778 in 1998 to 1,179,764 in 2003. Of those who were screened, only the proportion of subjects screened with fecal occult blood testing increased from 81.7% to 90.4%, while screening colonoscopy declined from 5.7% to 4.7%; flexible sigmoidoscopy declined from 8.3% to 3.6%; and double-contrast barium enema declined from 4.1% to 1.3%. The total use of screening colonoscopy procedures increased from 24,955 in 1998 to 55,199 in 2003, but the proportion of colonoscopy procedures performed for CRC screening purposes increased only slightly from 34.3% to 38.4%. In regression models adjusting for age, race, and sex, there was no consistent secular trend in the likelihood of undergoing screening colonoscopy for patients cared for in the VA health care system. CONCLUSIONS: Colorectal cancer screening has dramatically increased in the VA, but unlike in other practice settings, fecal occult blood testing is the dominant mode of screening. Although screening colonoscopy more than doubled in frequency, it constitutes a small proportion of the total CRC screening procedures used in the VA health care setting.

Aged↗

PubMed1994

Self-reported use of cancer screening tests among Latinos and Anglos in a prepaid health plan.

OBJECTIVE: To evaluate self-reported use of cancer screening tests by Latino and Anglo prepaid health plan members, we conducted telephone interviews about the knowledge of, use of, and reason for Papanicolaou (Pap) smear, clinical breast examination, mammogram, rectal examination, fecal occult blood test, and sigmoidoscopy. METHODS: Cross-sectional telephone survey of randomly selected Kaiser Permanente Medical Care Program members in San Francisco and Alameda Counties, California. A total of 844 Latinos (432 men and 412 women) and 510 Anglos (208 men and 302 women), between 35 and 74 years of age, completed the interview. RESULTS: Overall, 97.4% of Latinas reported having had at least one Pap smear compared with 99.7% of Anglo women; 90% in each group reported a Pap smear within 3 years. A clinical breast examination within 2 years was reported by 87% of Latina and 90% of Anglo women. Seventy-six percent of Latina and 85% of Anglo women aged 35 years or more reported having had at least one mammogram; and 65% of Latina and 75% of Anglo women reported a mammogram within 2 years. Among members 40 to 74 years of age, a lower proportion of Latinos compared with Anglos reported having had at least one digital rectal examination (67% vs 80%) and one fecal occult blood test (46% vs 54%); among those 50 to 74 years of age, fewer Latinos reported at least one sigmoidoscopy (29% vs 41%). After adjusting for age, education, employment, perceived health status, marital status, and county of residence, Latinos were significantly less likely to report having had at least one digital rectal examination (odds ratio; 0.60, 95% confidence interval, 0.45, 0.79), fecal occult blood test (odds ratio, 0.77; 95% confidence interval, 0.59-1.01), and sigmoidoscopy (odds ratio, 0.70; 95% confidence interval, 0.52, 0.95). After adjusting for the same variables, Latinos were more likely than Anglos to claim forgetfulness/carelessness (75% vs 60%; odds ratio, 1.84; 95% confidence interval, 1.41-2.40) as a reason for not obtaining cancer screening tests. CONCLUSION: These data suggest that, within this prepaid health plan without direct financial barriers to cancer screening services, Latinos are less likely than Anglos to obtain selected recommended cancer screening tests.

Adult↗