[Histopathologic diagnosis in colorectal cancer screening: guidelines].
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Adenomatous Polyposis Coli↗
Biomedical subjects
C Senore
Publications and source records attributed to C Senore.
Predictive value of rectal bleeding for distal colonic neoplastic lesions in a screened population.
The aim of this study was to determine the diagnostic value of rectal bleeding for distal colorectal cancer (CRC), or large (> or =10 mm) adenomas among an average-risk population. A cross-sectional survey was conducted among individuals aged 55-64 years, who attended sigmoidoscopy (FS) screening in the context of a multicentre randomised trial of FS screening for CRC. Sensitivity, specificity and positive predictive value (PPV) of rectal bleeding for large distal adenomas or CRC were calculated. Rectal bleeding was reported by 8.8% of 8507 patients examined (15% of those with large adenomas and 29% of those with CRC). The risk of CRC was increased when bleeding was associated with an altered bowel habit: odds ratio (OR)=10.42; 95% Confidence Interval (CI): 4.08-26.59; the corresponding OR for isolated bleeding was 5.29 (95% CI: 2.28-12.30). Rectal bleeding carries an increased risk of distal neoplastic lesions. However, most lesions are detected among asymptomatic subjects. This finding suggests that screening represents the optimal strategy to detect CRC or large adenomas in the distal colon in the targeted age range.
Colonic Neoplasms↗
Comparing participants and nonparticipants in a smoking cessation trial: selection factors associated with general practitioner recruitment activity.
We studied the relationship between smokers' sociodemographic characteristics, their smoking habit, health status, and the probability of their having been approached for recruitment in the smoking cessation trial performed in Turin, Italy, with the aim of gathering information on the role of selection criteria adopted by general practitioners (GPs) in offering anti-smoking counseling. The 965 smokers who were offered participation in the trial were matched to a sample of eligible smokers (n = 277), selected from the rosters of the 42 GPs collaborating in the trial, who had not been invited to participate. The probability of being offered enrollment, estimated through a multiple conditional logistic regression model, assuming the GP as the matching variable, was significantly increased for intermediate (10-19 cigarettes per day: odds ratio [OR] = 4.13; 95% confidence interval [CI]: 2.63-6.47) and heavy (20 cigarettes per day or more: OR = 10.12; 95% CI: 6.51-15.75) smokers, for smokers diagnosed with chronic cardiovascular (OR = 2.06; 95% CI: 1.19-3.58), or respiratory (OR = 2.50; 95% CI: 1.40-4.48) diseases, and for smokers mentioning an intermediate number (2-4) of past quit attempts (OR = 3.70; 95% CI: 2.18-6.28). General Practitioners focused their recruitment activity on higer-risk smokers or smokers who had tried to quit, to offer more clues for intervention. Assessing the potential public health benefit of preventive interventions requires a more systematic evaluation of the generalizability of the reported findings.
Adult↗
Interaction of spontaneous and organised screening for cervical cancer in Turin, Italy.
In a screening programme for cervical cancer, coverage of the target population is a major determinant of effectiveness and cost-effectiveness and is one of the parameters for programme monitoring recommended by the "European Guidelines for Quality Assurance". An organised screening programme was started in Turin, Italy, in 1992. Spontaneous screening was already largely present, but coverage (proportion of women who had at least a test within 3 years) was low (< 50%) and distribution of smears uneven. No comprehensive registration of spontaneous smears was available. All women were invited for the first round, independently of their previous test history. Coverage was estimated by integrating routine data from the organised programme with data on spontaneous screening obtained by interviews of a random sample of 268 non-compliers to invitation and 167 compliers. Overall (spontaneous + organised) coverage was estimated to be 74% (95% CI, 71-78%). The proportion of the target population covered as an effect of invitation was estimated to be 17% (95% CI, 15-20%). Invitations were successful in increasing coverage in previously poorly screened groups. Although 20-25% of compliers was estimated to have had further tests before the end of the round, we estimated that switching to a 3-year interval saved approximately 0.26 tests per complier. This suggests that invitations to an organised programme even to previously covered women, can be a cost-effective policy. Our method of estimating overall coverage can be useful in many other European areas where a comprehensive registration of smears is not available.
Adult↗
Screening for colorectal cancer by once only sigmoidoscopy: a feasibility study in Turin, Italy.
OBJECTIVES: To assess the impact on compliance of three invitation methods, as well as the acceptability and efficacy of two bowel preparation regimens, for endoscopic screening in the general population. METHODS: 1170 subjects (men and women aged 55 to 59, in the rosters of a sample of general practitioners (GPs) in Turin), were randomly allocated to one of three invitation groups (A: personal letter, signed by GP, with a pre-fixed appointment; B: same as for A + letter supporting the study by a well known scientist; C: letter signed by the study coordinator, NS) and two preparation regimens (i: one enema, self administered at home two hours before the test; ii: two enemas, administered the night before and two hours before the test). A postal reminder was mailed to non-attenders. A sample of non-responders was contacted for a telephone interview by a trained nurse. Written consent was obtained from all subjects undergoing the test. RESULTS: A total of 278 subjects attended for sigmoidoscopic screening. An invitation from the GP alone produced the highest response rate (compliance: A = 29.3%; B = 24.9%; C = 26.8%). A single enema was as effective as two enemas in achieving satisfactory preparation for the test: the proportion of subjects invited to repeat the test was 8.1% in the single enema group, and 9.6% in the group receiving two enemas. CONCLUSIONS: Compliance with this screening procedure tends to be low. One enema, self administered two hours before sigmoidoscopy, can ensure a satisfactory bowel preparation.
Colorectal Neoplasms↗
Who does Pap-test? The effect of one call program on coverage and determinants of compliance.
A pilot phase of a population-based organized screening programme for cervical cancer was run in Turin, Italy, in May-June 1991. Based on the city population lists, 1181 women 25 to 64 years old were invited in two family clinics. Overall compliance to invitation was 41.7%. In order to study the determinants of compliance, a random sample of 372 compliers and 398 non-compliers was interviewed. Interval since last Pap-test was strongly associated with compliance (ORs of complying were 2.52, 1.53, 1.41, 0.50 and 0.16 for intervals longer than 3 years, 1-3 years, 6 months-1 year, 3-6 months and less than 3 months respectively vs. never having had a Pap-test, p < 0.001). Estimated compliance was 39% among never screened women and 65% among those tested since more than 3 years, leading to an over 70% overall estimated coverage (women who complied or had a spontaneous test within 3 years). On the other hand, the effect of a number of sociodemographic variables (age, education, place of birth, marital status) was very weak or opposite (lower compliance among younger and more educated women) to what we found in a previous study on spontaneous Pap-testing. The clinic allocated to pre-fixed appointments had a higher compliance than the clinic with appointments to be arranged (OR = 2.36 95% c.i. 1.66-3.36). Anxiety caused by periodic controls for early diagnosis of cancer was an important negative determinant of compliance (ORs of complying were 0.85, 0.49, and 0.16 for those with mild, moderate and severe levels of anxiety vs. those reassured by the test). We concluded that personal invitations were actually able to reach those women who have a poor level of spontaneous practice and could reduce the selection in access to this preventive practice.
Adult↗
A randomized trial of smoking cessation interventions in general practice in Italy.
The purpose of this study was to examine the effectiveness of different practice-based approaches to assist patients of primary care physicians to quit smoking and sustain cessation. Forty-four nonsmoking general practitioners volunteered for the study. After a period of training, they randomized 923 smoking clients, unselected for motivation toward quitting, to four different intervention groups: (i) minimal intervention, consisting of one single counselling session and a brief handout on quitting techniques; (ii) repeated counselling including reinforcing sessions at Months 1, 3, 6, and 9; (iii) repeated counselling and use of nicotine gum; and (iv) repeated counselling and spirometry. Biochemically validated smoking status was assessed at six and 12 months after recruitment. The proportion of verified quitters at 12 months was 4.8 percent among subjects randomized to the minimal intervention group, compared to 5.5 percent, 7.5 percent, and 6.5 percent among those randomized to the three repeated-counselling groups. In no treatment group was the outcome significantly different from that for one-time counselling at the (P less than 0.05) level. Lack of power, contamination, and low attendance at reinforcing sessions should be taken into account in interpreting the results.
Adult↗
[General practitioners and interventions against smoking: a critical review of interventions].
In this review we considered smoking cessation interventions delivered by general practitioners in consideration of their privileged position as health promoters. We selected 11 randomized trials on: a) counselling; b) nicotine gum; c) perception of health hazards in relationship with cigarette smoking. The interventions were delivered to smokers during clinical encounters. Amount of time spent by physicians during clinical encounters and number of reinforcing sessions emerged as the most important factors in a successful intervention. Nicotine gum prescription and perception of health hazards did not show any significant effect but the opportunity as reinforcing sessions.
Adolescent↗
Predictors of smoking cessation following physicians' counseling.
BACKGROUND: The purpose of this study was, to identify predictors of quitting following general practitioners' (GP) anti-smoking counseling. METHODS: We studied determinants (characterized following the Precede framework) of successful quitting (1 year sustained abstinence, biochemically confirmed at 6- and 12-month follow-up) among 861 smokers randomized to the intervention groups based on repeated counseling (RC), RC + spirometric testing, and RC + nicotine gum, in a smoking cessation trial carried out in Turin, Italy. RESULTS: GPs' intervention worked best for male (OR = 2.30; 95% CI, 1.13-4.52) and married (OR = 3.63; 95% CI, 1.37-9.59) smokers, for smokers who had maintained abstinence for at least 1 month in the past (OR = 6.78; 95% CI, 1.56-29.52) or at their first quit attempt (OR = 10.91; 95% CI, 2.37-50.13), and for those who spontaneously reduced their coffee consumption (OR = 3.30; 95% CI, 1.59-6.82); heavy smokers (> = 20 cig/day OR = 0.48; 95% CI, 0.24-0.93) and those living with other smokers (> = 1 smokers in the household: OR = 0.44; 95% CI, 0.22-0.90) were less likely to give up. Previous antismoking advice by the GP represented a strong barrier to success for healthy smokers (OR = 0.19; 95% CI, 0.07-0.52), but not for those reporting symptoms of shortness of breath (OR = 0.63; 95% CI, 0.39-9.20). There were no interactions between predictors and treatment conditions. CONCLUSIONS: Assessment of factors influencing quitting would allow GPs to tailor their message to address existing barriers and to help patients utilize their resources for change.
Adult↗
General practitioners and mammographic screening uptake: influence of different modalities of general practitioner participation. Working Group.
AIMS AND BACKGROUND: To compare the impact of different modalities of general practitioner (GP) involvement, including the introduction of target payments, on the attendance rate of organized population-based screening programs for breast cancer in Italy. STUDY DESIGN: The study was conducted between 1994 and 1996 in four Italian cities where mammographic screening programs are active: Caltanissetta (CL), Firenze (FI), Modena (MO) and Torino (TO). The impact on attendance rate of different invitation strategies based on active GP involvement was tested in each center. The additional effect of economic incentives was also assessed. The incentives were proportional to the level of compliance attained by each GP and weighted by the size of his eligible patients' list. RESULTS: In the Firenze project, an invitation signed by the GP and the project co-ordinator attained a statistically significant higher participation (difference: 4.2%, chi2 = 7.42, P = 0.006). In Caltanissetta and Torino there was a significant increase of about 7% in the response rate to the postal reminder in the groups contacted by the GPs. No difference was observed in the Modena project between the two groups. CONCLUSIONS: The main contributions of GP involvement can be: "cleaning up" the invitation lists, especially when computerized archives with the mammographic history of the target population are not available; increasing the women's participation by signing the invitation letter, by counseling and active participation in the invitation phase; co-operating in the reminder phase by recalling women non responders at first invitation. The offer of target payment had a certain impact on the screening uptake, but not easily distinguishable from GP signature of the invitation letter; further studies of appropriate design should be planned. Organizational factors, such as availability of a list of non-responders, might be crucial in order to enhance the effect of the GPs' action.
Family Practice↗
Promoting participation in a population screening program for breast and cervical cancer: a randomized trial of different invitation strategies.
AIMS AND BACKGROUND: Attendance level has been identified as a major determinant of cost-effectiveness of organized screening programs. We tested the effectiveness of 4 different invitation systems in the context of an organized population screening program for cervical and breast cancer. METHODS: Women eligible for invitation--8385 for cervical and 8069 for breast cancer screening--listed in the rosters of 43 and 105 general practitioners (GP), respectively, who had accepted to collaborate in the program, were randomized to 4 invitation groups: Group A--letter signed by the GP, with a prefixed appointment; Group B--open-ended invitation, signed by the GP, prompting women to contact the screening center to arrange an appointment; Group C--letter (same as for group A), signed by the program coordinator, with a prefixed appointment; Group D--extended letter (highlighting the benefits of early cancer detection) signed by the GP, with a prefixed appointment. Assignment to the interventions was based on a randomized block design (block=GP). RESULTS: Assuming Group A as the reference, the overall compliance with cervical cancer screening was reduced by 39% in Group B (RR=0.61; 95% CI, 0.56-0.68) and by 14% in Group C (RR=0.86; 95% CI, 0.78-0.93); no difference was observed for Group D (RR=1.03; 95% CI, 0.95-1.1). The response pattern was similar for breast screening (Group B: RR=0.71; 95% CI, 0.65-0.76; Group C: RR=0.87; 95% CI, 0.81-0.94; Group D: RR=1.01; 95% CI, 0.94-1.08). CONCLUSIONS: Personal invitation letters signed by the woman's GP, with preallocated appointments, induce a significant increase in compliance with screening. Efficiency can be ensured through the adoption of overbooking, provided that attendance levels are regularly monitored.
Adult↗
[Urinary cotinine as indicator of exposure to passive smoking].
We studied the association between self-reported exposure to passive smoking (ETS) and urinary cotinine among 95 ex-smokers, who had quit in the context of a smoking cessation trial in general practice, and among 33 ex-smokers who had been contacted in the context of a study aimed at estimating the spontaneous cessation rate among smokers, listed in the roosters of the General Practitioners participating in the trial, who had not been offered recruitment. The results of multivariate linear regression analysis indicated that duration of exposure at home was strongly related to cotinine levels (increase of 1 ng/mg every 3 hours of exposure at home), quantified by radioimmunoassay. Duration of exposure in public places showed a similar effect, but the association was significant only among subjects who reported having been exposed in a heavily ETS polluted environment (increase of 1 ng/mg every 45 minutes of exposure). Among subjects exposed at work cotinine concentration was associated to subjects' judgement of the concentration of ETS, rather than to duration of exposure. Standardized questionnaires may provide a reasonably accurate description of ETS exposure and they can be used to assess exposure in etiologic studies. Non-smokers non exposed to ETS at home may not represent an appropriate control group in such studies. Indeed, they may be exposed to other sources, as indicated by the relatively high levels of urinary cotinine among ex-smokers non exposed at home in our study. Misclassification of these subjects may result in a dilution of the effect of the exposure.
Biomarkers↗
Flexible sigmoidoscopy as a colorectal cancer screening test in the general population: recruitment phase results of a randomized controlled trial in Lombardia, Italy.
UNLABELLED: A two arm multicentre randomized controlled trial is in progress to evaluate the efficacy of flexible sigmoidoscopy (FS) as a screening test for colorectal cancer in the general population. AIMS: To determine the acceptance rate and feasibility of FS as a colorectal cancer screening test in average-risk asymptomatic volunteers. Average-risk, asymptomatic subjects, aged 55-64 years and assisted by 244 general practitioners (GPs) in Lombardy, Italy, were invited by postal questionnaire (PQ) to enter a study for the prevention of colorectal cancer and asked to indicate their interest in, and willingness to undergo, screening: those responding positively were randomized to the intervention or control arms. GPs were trained in colorectal cancer screening and proposed free FS to their patients randomized to the intervention arm. All sigmoidoscopies were performed by experienced endoscopists. Small polyps were removed at FS. Colonoscopy was indicated for high risk polyps (size more than 5 mm, more than two adenomas, villous histology, severe dysplasia or malignancy). 40,945 subjects were invited. 667 PQs were returned undelivered due to postal failure. 7,892 (19.59%) subjects responded, 2,116 of whom (26.81%) were not included, presenting 1 or more exclusion criteria. We randomized 5,778 volunteers and performed 1,582 sigmoidoscopies out of 2,885 subjects in the intervention arm (54.84% acceptance rate). Although the screening procedure had a good attendance rate in the intervention group, involvement of the people invited was lower than expected. Future FS screening programmes will require a keener focus on recruitment strategies, mainly with participation of GPs.
Colorectal Neoplasms↗
Preventive practices of general practitioners in Torino, Italy.
Health care reforms introduced in Italy in the late 1970s triggered a profound rethinking of the role of general practitioners (GPs) in prevention. We interviewed 209 GPs registered in the Torino area to delineate their beliefs, attitudes, and practice patterns in relation to prevention. We examined an array of primary and secondary preventive interventions, including influenza vaccination of the elderly; counseling activities related to smoking, alcohol consumption, accidents, contraception, safety helmets, and seat belts; and early detection of hypertension and lung, cervical, and breast cancers. Improvement can still be made in the full implementation of preventive practices. We examine features of the organization of medical practices in Italy that impede the integration of preventive interventions in primary care.
Adult↗
[Why should we talk about technology evaluation?].
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Quality Control↗