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PubMedDate not supplied

Knowledge of cervical cancer screening and use of cervical screening facilities among women from various socioeconomic backgrounds in Durban, Kwazulu Natal, South Africa.

The value of screening for cervical cancer has been proven. Such screening in developed countries has achieved a decrease in incidence and mortality by about 80%. Although screening facilities are available in certain parts of developing countries, the incidence of cervical cancer remains very high and many patients present with late stage disease. The study was performed among women from different socioeconomic circumstances (low, middle, and upper social/financial backgrounds). The assessment was performed by means of a questionnaire. The majority of patients from lower socio-economic circumstances with multiple risk factors were not aware of cervical screening or facilities available for this purpose. However, in spite of knowledge of cervical screening and the availability of such services, the majority of women (87%) from higher social and educational backgrounds did not undergo cervical screening. Most patients resided within a 12-kilometer radius of a facility that either provided or could potentially provide screening. Although some patients (36.7%) had had a screening test performed at some time in the past, only 27.3% of patients reported having had a Pap test. This was due to failure on the part of the healthcare giver to disseminate information to the patient regarding the reason and value of cervical screening. Among women from higher socioeconomic groups, the level of education was better and knowledge of the Pap test was not age-dependent. We conclude that the mere provision of a cervical cancer screening service is not sufficient to ensure successful uptake since screening is a multifaceted entity. Improvement of socioeconomic and educational circumstances should improve the uptake of a screening program only if the healthcare giver provides appropriate information to the patient and the patient takes the initiative to avail themselves of such screening.

Adolescent↗

PubMed2005

Routine cervical screening with primary HPV testing and cytology triage protocol in a randomised setting.

The role of high-risk human papillomavirus (hrHPV) testing in primary cervical screening has not been established. We generated a randomised evaluation design ultimately to clarify whether primary hrHPV testing implemented into routine screening can bring increase in the programme effectiveness. The aim of the present report on first-year results was to assess the cross-sectional relative validity parameters for routine hrHPV screening, in comparison with conventional screening. An equal number of women invited to routine screening was randomly allocated to primary hrHPV screening (n=7060) and to cytological screening (n=7089). In the hrHPV screening arm, after a single positive hrHPV test result, the need of colposcopy referral was determined by a cytological triage test. Compared with the conventional arm, more colposcopy referrals were made in the hrHPV screening arm (relative risk 1.51, confidence interval 95% 1.03-2.22). Specificity of the primary screening with sole hrHPV test (91.5-92.1%) was much lower than that with the cytology triage (98.7-99.3%), which was not quite as specific as screening with conventional cytology (99.2-99.6%). Compared with conventional cytology, primary screening with hrHPV test results in increased cross-sectional relative sensitivity at the level of all positive lesions at the cost of substantial loss in specificity. With cytology triage, the specificity improves to the level of conventional cytology.

Adult↗

PubMedDate not supplied

Information given to women invited for cervical screening: results of two postal surveys seven years apart.

In South Staffordshire, England, we compared women's views on information provided to them at different stages of the cervical screening program in 1994 with that provided in 2001. An age-stratified random sample of women aged 20-64 years who had a cervical smear taken between January and March 1994 (3856) or between January and March 2001 (4057) were sent postal questionnaires in June 1994 and July 2001, respectively. Response rates in 1994 (3124/3856, 81%) and 2001 (3288/4057, 81%) were similar. Compared to 1994, the proportion of women who thought the invitation letter was clear to read in 2001 increased (70% vs 98%, P < 0.0001); however, letters were thought to be less reassuring in 2001 compared to 1994 (P < 0.0001). In both study periods, 66% of women reported that the procedure was explained to them before the smear was taken. A greater proportion of women received their results by letter in 2001 compared to 1994 (57% vs 41%, P < 0.0001); however, 49% of women waited >4 weeks to receive their results in 2001 compared to 26% in 1994 (P < 0.0001). Bivariate analysis suggests that responses were age related, with older women (> or =45 years) experiencing poorer information provision. The issues highlighted by this study deserve further investigation in other areas.

Adult↗

PubMed2006

A report on the current status of European research on the use of human papillomavirus testing for primary cervical cancer screening.

Cervical cancer remains a significant public health concern, both at a global and a European level. A number of new technologies such as diagnostic tests for human papillomavirus (HPV) have a potential to assist with the reduction of this disease. However, both the efficacy and the cost-effectiveness of these new technologies must be established in properly designed trials before they can be implemented within national public health programs. Our study reviews the randomized controlled trials that are currently being conducted in Europe to establish the performance of HPV testing as a primary cervical cancer screening test.

DNA, Viral↗

PubMedDate not supplied

A real time optoelectronic device as an adjunct to the Pap smear for cervical screening: a multicenter evaluation.

We report on the results from a multicenter trial for a real time optoelectronic device as an adjunct to the Pap smear for cervical screening. TruScreen (Polartechnics Limited, Sydney, Australia) is an automated device which measures the response to optical and electrical stimulation of the cervix and returns a screening result in real time. Analysis was performed on a group of 651 subjects recruited at 10 centers. Cytology and histology analyses were performed by centralized laboratories, with the cytology classification performed according to the Bethesda 2001 system. The sensitivities for histologically confirmed CIN 2/3 lesions by TruScreen, Pap, and TruScreen/Pap combined were 70% (95% CI: 67-74), 69% (CI: 65-72), and 93% (CI: 91-95), respectively. For histologically reported CIN 1, the sensitivities of the TruScreen, Pap, and combined test were 67% (CI: 63-70), 45% (CI: 41-49), and 87% (CI: 84-89). The improvement in sensitivity for the combined test compared to the Pap smear alone was significant (P = 0.002). Because TruScreen and cytology detect partly different but overlapping groups of CIN cases, the adjunctive combination provides very high CIN detection rates.

Adult↗

PubMed2001

Law, ethics and epidemiology: the case of the cervical screening audit.

This paper provides a legal and ethical analysis of some controversial aspects of a recent proposal for an independent audit of New Zealand's National Cervical Screening Programme. The analysis reveals the difficulties likely to arise between investigators and ethics committees when the interests served by important public health research compete with the rigorous protection of patients' privacy.

Access to Information↗

PubMed1989

Cervical screening in the workplace.

In an attempt to improve cervical cytology screening uptake in women aged over 40, a mobile screening unit was used to make screening easily available to women at work. This service was organized jointly between the District Health Authority, the Women's National Cancer Control Campaign and the South West Thames Regional Cancer Organization, and was offered to all companies employing at least 25 women. Thirty-nine out of 82 companies accepted the offer. Among those companies which were able to supply a register of their employees aged over 40, 91 per cent of eligible women attended the mobile clinic. The clinic doctors followed District guidelines in not taking smears from women who had been screened and found negative within the previous three years, or who had had a hysterectomy for an unrelated reason. Of the 1038 women who attended the clinic, cervical smears were taken from 568 (55 per cent). Fifteen women were found to have cervical neoplasia, of whom nine had either never been screened before or had last been screened more than five years previously; a further two women (one of whom was found to have early invasive cancer) had previously had an abnormal smear for which the recommended follow-up had not been done. It was not possible to quantify the benefits of other tests (clinical breast examination, blood pressure, urinalysis and gynaecological examination) included in the screening clinic, but they were popular with the women attending. Provided that the health authority is involved in the planning and organization of workplace screening, it can be a valuable adjunct to improving screening coverage, particularly for women aged over 40.

Adolescent↗

PubMed1986

[Cervical screening and surveillance of the cervix uteri before the age of 20].

The authors record a sample of 2,234 adolescents who were aged 20 years or less and who had systematic cervical screening. This was carried out in a Social Service gynaecological department and the reason for it was mainly to research in the epidemiology. The authors have analysed the results of 870 cervical smears and 62 colposcopies. They found that in this young population there were 11% dysplastic smears; 59% viral type smears (condylomata or herpes); 11% mild or moderate dysplasias and 16% flat condylomata that were proven histologically. The authors review the recent literature and their results and the risk factors for cancer of the cervix in adolescents and demonstrate the value of early screening of this population.

Adolescent↗

PubMed2003

[Computerised monitoring of integrated cervical screening. Indicators of diagnostic performance].

In a previous issue of this journal, we presented the background, rationale, general methods, and indicators of participation of a computerised system for the monitoring of integrated cervical screening, i.e. the integration of spontaneous Pap smear practice into organised screening. We also reported the results of the application of those indicators in the general database of the Pathology Department of Imola Health District in northern Italy. In the current paper, we present the rationale and definitions of indicators of diagnostic performance (total Pap smears and rate of unsatisfactory Pap smears, distribution by cytology class reported, rate of patients without timely follow-up, detection rate, positive predictive value, distribution of cytology classes reported by histology diagnosis, and distribution of cases of CIN and carcinoma registered by detection modality) as well as the results of their application in the same database as above.

Adolescent↗

PubMedDate not supplied

Telomerase-A molecular marker for cervical cancer screening.

Cervical cancer is one of the most common cancers in women and can be routinely screened for by the Papanicolaou smear. Screening for HPV high-risk types 16 and 18 has augmented the sensitivity of this test, but still some cases remain undetected. We have investigated the utility of assaying telomerase activity as a possible screening marker for cervical cancer. Telomerase activity was studied in relation to HPV 16/18 infection, Papanicolaou smear cytopathology, and biopsy histopathology in a total of 88 subjects, consisting of 29 cervical cancer cases, 19 control hysterectomy samples, 16 precancerous cervical scrapes, 6 cervical samples from other gynecological malignancies, and 18 normal healthy cervical scrapings. Telomerase activity was detected in 96.5% of cervical tumor samples and in 68.7% of premalignant cervical scrapings but was not detected in control hysterectomy samples and in cervical scrapings of normal healthy controls. Telomerase assay had a diagnostic accuracy of 95.8 in tissue samples, 79.1 in scrapings and 91.2 in all. Whereas HPV-16/18 subtyping had a diagnostic accuracy of 89.5% in tissue samples, 70.5% in scrapings, and 82.1% in all. There was also 71% agreement between telomerase activity and HPV-16/18 infection. The absence of telomerase activity in cervical scrapes from healthy women indicated the potential of telomerase to serve as a good screening marker for the early diagnosis of cervical cancer. For the first time we have also shown the ability of telomerase to detect micro and probably occult metastasis in gynecological malignancies.

Adult↗

PubMed1996

Estimating the efficacy of screening by auditing smear histories of women with and without cervical cancer. The National Co-ordinating Network for Cervical Screening Working Group.

The screening histories of all 348 women with invasive cervical cancer diagnosed in 1992 in 24 self-selected district health authorities and health boards in England, Wales and Scotland were compared with those of 677 age- and residency-matched controls. The controls were randomly selected from the family health services authority (FHSA) register. Screening histories, comprising the dates and results of all smears taken before the date of diagnosis of the patient's cancer, were determined from the FHSA computer and laboratory records. We estimate that the number of cases of cervical cancer in participating districts in 1992 would have been 57% (95% confidence interval 28-86%) greater if there had been no previous screening. In women under the age of 70 it would have been approximately 75% (31-115%) greater. Extrapolation of the results from this pilot suggests that screening prevented between 1100 and 3900 cases of invasive cervical cancer in the UK in 1992. Women with stage 1B cancer or worse were more likely to have no record of previous screening than controls: 47% of these women under the age of 70 had been adequately screened according to current (5 yearly screening) guidelines, compared with 75% of matched controls. Thirteen per cent of all patients under age 70 had screening histories indicative of inadequate follow-up of smears requiring colposcopy. The proportion of microinvasive cases with screening predating diagnosis was similar to the proportion of controls. There was a strong correlation between stage and age: 56% of cancers in women under 35 were microinvasive compared with just 9% in women 65 years or over. The 'relative protection' following a negative smear was greatest in the first 12 months and fell off towards the end of the fifth year. These data suggest that full adherence to current guidelines could perhaps have prevented another 1250 cases, but additional steps would have been required to prevent some of the 2300 remaining cases in women under the age of 70.

Adult↗

PubMed2005

Cervical screening programmes: can automation help? Evidence from systematic reviews, an economic analysis and a simulation modelling exercise applied to the UK.

OBJECTIVES: To assess the effectiveness and cost-effectiveness of adding automated image analysis to cervical screening programmes. DATA SOURCES: Searching of all major electronic databases to the end of 2000 was supplemented by a detailed survey for unpublished UK literature. METHOD: Four systematic reviews were conducted according to recognised guidance. The review of 'clinical effectiveness' included studies assessing reproducibility and impact on health outcomes and processes in addition to evaluations of test accuracy. A discrete event simulation model was developed, although the economic evaluation ultimately relied on a cost-minimisation analysis. RESULTS: The predominant finding from the systematic reviews was the very limited amount of rigorous primary research. None of the included studies refers to the only commercially available automated image analysis device in 2002, the AutoPap Guided Screening (GS) System. The results of the included studies were debatably most compatible with automated image analysis being equivalent in test performance to manual screening. Concerning process, there was evidence that automation does lead to reductions in average slide processing times. In the PRISMATIC trial this was reduced from 10.4 to 3.9 minutes, a statistically significant and practically important difference. The economic evaluation tentatively suggested that the AutoPap GS System may be efficient. The key proviso is that credible data become available to support that the AutoPap GS System has test performance and processing times equivalent to those obtained for PAPNET. CONCLUSIONS: The available evidence is still insufficient to recommend implementation of automated image analysis systems. The priority for action remains further research, particularly the 'clinical effectiveness' of the AutoPap GS System. Assessing the cost-effectiveness of introducing automation alongside other approaches is also a priority.

Automation↗

PubMed2004

To be reassured or to understand? A dilemma in communicating normal cervical screening results.

BACKGROUND: Receiving negative test results may be associated with two problems: (a). not being reassured and wanting further, unnecessary screening; and (b). not understanding residual risk and not attending future recommended screening. AIM: To test two hypotheses: (1). Emphasizing test accuracy and low residual risk when giving negative test results reduces a desire for further unnecessary screening, while also reducing a correct understanding of the meaning of the result. (2). The effect of emphasizing low risk on desire for future screening is mediated by lack of reassurance. DESIGN: Experimental, vignette-based study, with a 2 x 2 factorial design. METHOD: A sample of 184 women was asked to imagine that they had recently undergone a cervical screening test and received a normal result. They were given one of four hypothetical letters from their GP,differing in whether or not it emphasized test accuracy and low residual risk of developing cervical cancer. Participants completed a questionnaire assessing perceived risk, reassurance about test results, desire for further screening within six months and understanding of the test results. RESULTS: Emphasizing test accuracy and low residual risk increases desire for inappropriate screening while reducing the understanding of residual risk. These effects are interactive, in that presenting both together has a larger effect than the sum of the two individual effects. The effect of emphasizing low risk on desire for future screening was mediated by reassurance. CONCLUSION: Emphasizing low residual risk and test accuracy is a double-edged sword: it reduces a desire for unnecessary screening, but also reduces correct understanding of the result.

Adolescent↗

PubMed2005

Knowledge and practice of cervical screening among female health workers in Sokoto, North Western Nigeria.

BACKGROUND: Several studies have shown the importance of health care professionals as predictors of the use of cervical cancer screening. AIMS: To determine the knowledge and utilisation of cervical cancer screening services in a cohort of subjects where awareness is naturally expected to be high. METHODS: A cross sectional questionnaire survey of 159 female health care providers in Usmanu Danfodiyo University Teaching Hospital Sokoto. The sample included doctors, nurses, pharmacists, laboratory scientists and medical social workers. RESULTS: Knowledge of cervical cancer screening is high among the respondents. However, only 4.4 % had availed themselves of the opportunity for the test. CONCLUSION: Health care providers should improve on opportunistic screening. It is necessary for a national screening policy to be formulated and implemented in Nigeria.

Adult↗

PubMed2006

A descriptive study of the decline in cervical screening coverage rates in the North East and Yorkshire and the Humber regions of the UK from 1995 to 2005.

Since the mid-1990s, there has been a steady decline in coverage rates for cervical screening in the target age group (25-64 years) across England. This article describes the rate of decline from 1995 to 2005 in the old health authority areas of the North East and the Yorkshire and the Humber (NEYH) regions in relation to age group, deprivation, ethnicity and religion. The results show that the rate of decline is faster in these northern regions than that in England as a whole, with a very strong correlation between age and rate of change of coverage rates. Younger age groups experience the fastest rate of decline, and those over 55 years show an increase in coverage rates. There is an association between the deprivation of the old health authority areas and the rate of change of coverage rates, with weaker evidence that areas with high proportions of Black or Mixed ethnicity may have a faster decline. However, the rate of decline is not associated with other ethnic groups or religions. Therefore, interventions could be targeted at younger women and those who live in deprived areas to prevent the widening of inequalities.

Adult↗

PubMedDate not supplied

Predictors of breast and cervical screening in Vietnamese women in Harris County, Houston, Texas.

The Vietnamese are a quickly growing, important part of the Texas population. Breast cancer is known to have different biologic characteristics in Vietnamese women. In order to develop appropriate intervention and screening strategies, we conducted a study of barriers to cervical and breast screening in Vietnamese women in Harris County, Tex. Our objective was to characterize the demographic factors, beliefs, and barriers to cervical and breast cancer screening in our study population and test the effect of these on Papanicolaou test, breast self-examination (BSE), medical breast examination (MBE), and mammography use. The Health Belief Model Scales for Measuring Beliefs Related to Breast Cancer (Champion VL, Nursing Research 1993;42:139-143) was the framework used to assess attitudes regarding risk of breast cancer and to design a component assessing risk of cervical cancer. The questionnaire addressed susceptibility, seriousness, benefits, barriers, and health about screening for breast and cervical cancer. It was translated into Vietnamese and back-translated into English prior to use. The questionnaire was mailed to Harris County residents. Those returned were entered into a database. The data were analyzed for validity using Chronbach's alpha. Simple descriptive analyses and nominal logistic regression identified predictors of Papanicolaou test, BSE, MBE, and mammography use. Twelve hundred surveys were mailed out to Vietnamese women using the telephone directory and the church directories in Harris County; 209 were returned and entered into the database. Of the respondents, 67% had ever received a Papanicolaou test; of these, 89% had received a Papanicolaou test within the past year; 55% of respondents had performed a BSE, 45% of patients received an MBE, and 45% of respondents had ever received a mammogram (15% of respondents had a mammogram during the previous year). The most significant predictors of Papanicolaou test, BSE, MBE, and mammography use were marital status (being married), high educational level, lack of barriers, a family history of the cancer, older age, and increased perception of seriousness. Compared to other studies of Vietnamese women, the women in Texas are among the highest users of the Papanicolaou test, BSE, MBE, and mammography. Barriers and incentives to breast and cervical screening were similar to those in other studies.

Adult↗

PubMed1998

[Cervical screening--its essence and quality-control methodology in cytology laboratories].

The essence and importance of the quality control in the activity of the cytological laboratories, fulfilling the 1st step of the cervical screening are discussed. The methodology is presented, as well as the possibilities of the different kinds of internal and external control and the place of the introduced in the practice of the developed countries automated analyzing systems are under consideration.

Cytological Techniques↗

PubMed1997

Barriers to cervical screening: women's and health workers' perceptions.

Cancer of the cervix is the most common cause of cancer mortality among Black South African women. Mortality can be reduced by an effective screening programme. Such a programme is being considered for implementation in South Africa. It is important that the implementation of a national screening programme be based on solid understanding of the current situation as well as the anticipated barriers to the effectiveness of the programme. This qualitative study was done at three rural sites in order to explore the barriers to effective utilisation of cervical screening from the perspectives of women and health workers. The aim was to inform the local service organisers as well as the policy process when planning the new screening programme. There were interesting similarities and differences between the barriers that were identified by the health workers and those by the women. Those identified by the health workers included several structural problems associated with the service such as busy clinics and problems of access including lack of transport, the mobility of the people and opposition from men. None of the women spoke of these service and access factors. Women emphasised issues surrounding the actual procedures which were based on their experiences and information they had gained from friends and other community networks. The barriers identified by women are amenable to change through careful attention to health education and the circumstances of the test. If the new screening policy is to be implemented nationally and be successful in recruiting cervical cancer cases, nurses will have a key role in identifying and overcoming barriers to smear uptake at a local level. This study has shown the importance of listening to patients in this process.

Adult↗