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PubMed2006

Communication between older women and physicians: preliminary implications for satisfaction and intention to have mammography.

OBJECTIVE: To explore the associations between physician communication styles and their older patients' intentions to get mammography and satisfaction with physician communication. METHODS: This cross-sectional mixed methods study was conducted in a teaching hospital outpatient clinic with faculty general internists (n=7) and their female patients aged 65 years and older (n=56). Audiotaped communication was coded by researchers using the multidimensional interactional analysis and assisted doctor-elderly patient transactions coding systems. Demographic data was collected prior to the visit. Data on intention to have mammography and satisfaction with communication were collected immediately post-visit. RESULTS: The majority of encounters had some degree of joint decision-making. Communication styles tended to be associated with women's intentions to have screening mammography. Patients who described communication as "deep", "trusting" and "bonding" were more satisfied with communication than women who rated physician communication as less trusting (p=0.03, 0.02 and 0.02, respectively). CONCLUSION: Physicians' communication styles affect their older female patients' satisfaction. In this preliminary study, older women who rated communication as being deep, trusting and bonding tended to have a greater intention to have mammography. PRACTICE IMPLICATIONS: Improving physicians' communication styles may increase satisfaction with physician communication and result in higher mammography adherence among older female patients.

Aged↗
PubMed2006

The effect of telephone versus print tailoring for mammography adherence.

OBJECTIVE: The purpose of this intervention was to increase mammography adherence in women who had not had a mammogram in the last 15 months. METHODS: A prospective randomized intervention trial used four groups: (1) usual care, (2) tailored telephone counseling, (3) tailored print, (4) tailored telephone counseling and print. Participants included a total of 1244 women from two sites-a general medicine clinic setting serving predominately low-income clientele and a Health Maintenance Organization (HMO). Computer-tailored interventions addressed each woman's perceived risk of breast cancer, benefits and/or barriers and self-efficacy related to mammography screening comparing delivery by telephone and mail. RESULTS: Compared to usual care all intervention groups increased mammography adherence significantly (odds ratio 1.60-1.91) when the entire sample was included. CONCLUSIONS: All interventions groups demonstrated efficacy in increasing mammography adherence as compared to a usual care group. When the intervention analysis considered baseline stage, pre contemplators (women who did not intend to get a mammogram) did not significantly increase in mammography adherence as compared to usual care. PRACTICE IMPLICATIONS: Women who are in pre contemplation stage may need a more intensive intervention.

Computer-Assisted Instruction↗
PubMed2004

Mammography-facility-based patient reminders and repeat mammograms for Medicare in New York State.

BACKGROUND: Women who receive mammograms may fail to regularly return for repeat mammography. Many mammography facilities send annual patient reminders, but there are no large studies of their impact on overall mammography return rates, or by patient population subgroups. METHODS: Medicare claims data were used to identify New York women with claims for mammograms during a baseline and an 18-month follow-up period (1999-2000). Receipt of a second mammogram was examined in relation to whether the facility sends annual reminders, while controlling for other patient factors. RESULTS: Of 97,506 women studied, 76% attended facilities that send annual reminders. Of these women, 74% received a second mammogram within 18 months compared to 67% for other women. The impact of reminders was significant in all subgroups, but was less for women who were younger, minority, in Medicaid, in New York City or who received a diagnostic mammogram. In multivariate analysis, the adjusted odds ratio for return within 18 months if the facility uses reminders was 1.42 (95% CI 1.37-1.47). CONCLUSIONS: Annual patient reminders from mammography facilities are effective in increasing regular repeat mammography in Medicare women, although their impact is smaller in some groups. Facilities that do not currently send reminders should be encouraged to do so.

Adult↗
PubMed2006

Correlates of mammography in a national analysis compared to results in quintile- and regionally-defined samples.

BACKGROUND: National-level data are often used to identify groups of women at greater risk of not obtaining mammography, who might then receive targeted interventions. An important question, however, is how well results of national-level analyses match results from smaller samples of the same dataset. This study investigated the consistency of results about correlates of mammography from a single national-level analysis versus the results from analyses within each of five quintiles of mammography rates and nine Census subdivisions. METHODS: The sample for all analyses were women aged 42-79 from the Year 2002 United States' Behavioral Risk Factor Surveillance System (N = 80,283). Recent mammography was defined as self-report of a mammogram within the 2 years prior to the interview. Independent variables included sociodemographics, health practices, and a combined insurance status/usual source of care variable. RESULTS: Only smoking status, Pap testing, dental visit, and health insurance/source of care had consistent results with mammography status across all levels of analysis. Results for the other covariates, including standard sociodemographics, showed varying degrees of consistency. CONCLUSIONS: Caution is advised when using national data to inform regional or local intervention planning. Local and regional data are necessary to target programs to groups at greatest need for intervention.

Adult↗
PubMed2006

The distribution and predictive validity of the stages of change for mammography adoption among Canadian women.

OBJECTIVE: To examine the predictive validity of the transtheoretical model (TTM) stages of change for mammography participation in Canadian women. METHOD: We examined the association between baseline TTM stage of mammography adoption and subsequent mammography participation in a representative sample of 3,125 Canadian women aged 40 and older from the longitudinal Canadian National Population Health Survey. RESULTS: The likelihood of having a mammogram at follow-up (1998/1999) increased with progressive stages of change at baseline (1996/1997) even after adjusting for potential confounders. Relative to women in maintenance, women in precontemplation, relapse, contemplation, relapse risk, and action were significantly less likely to report a recent mammogram during follow-up (adjusted RR of 0.41, 0.50, 0.63, 0.75, and 0.92, respectively; P(trend) < 0.01). This pattern held for women within and outside of the 50-69 target age range, and for urban and to a lesser degree rural-dwelling women. CONCLUSION: Our findings support the predictive validity of the TTM stages of mammography adoption construct and the inclusion of both relapse and relapse risk categories to improve the sensitivity of the predictive model. Interventions to promote the eventual maintenance of mammography screening should also benefit from further research that aims to understand the variables that promote progressive movement through the stages.

Adult↗
PubMed2001

Correlating sonography, mammography, and pathology in the assessment of breast cancer size.

BACKGROUND: With the increasing use of neoadjuvant and minimally invasive therapy, the accuracy of preoperative determination of breast tumor size becomes important. Therefore, we undertook this study to compare mammography and ultrasonography (US). METHODS: A total of 180 invasive breast cancer patients were prospectively examined by mammography and US; 146 eligible patients had tumors visualized by both modalities. RESULTS: In 69% of cases, US was better than or equivalent to mammography in determining tumor size. Both underestimated tumor size; mean (median) underestimation was 3.8 +/- 0.7 mm (1.7 mm) by US and 3.5 +/- 0.9 mm (2 mm) by mammogram. Maximal tumor dimension was accurate within 5 mm in 65% of cases by mammography and 75% of cases by US. For mammographically determined size (versus pathologic size) correlation, r, was 0.4 and for US it was 0.63 and improved for only T1 and T2 tumors. CONCLUSIONS: These data suggest that US is more accurate than mammography in assessing breast cancer size.

Adult↗
PubMed1998

Comparison of accuracy of scintimammography and X-ray mammography in the diagnosis of primary breast cancer in patients selected for surgical biopsy.

Mammography, whilst remaining the first line imaging investigation of suspected primary breast cancer, can be difficult to interpret in patients with fibrous or dense breasts. Radionuclide imaging of the breast (scintimammography) has been suggested as an additional test. The aim of this study was to perform prospectively a comparison of the two techniques in a population with suspected breast cancer. Seventy such patients, mean age 54 years (range 57 years, 28-85) with 74 suspicious breast lesions were studied. They were imaged 5-10 min after intravenous injection of 740 MBq of Tc-99m sestamibi. Prone lateral and anterior supine views with and without markers were performed. All patients had histological confirmation of the nature of the breast lesions by limited incisional biopsy or definitive wide local excision, or cytological confirmation on fine needle aspiration. All patients had X-ray mammography. There were 53 malignant breast tumours and 21 benign lesions. Scintimammography correctly diagnosed 47 breast cancers, and yielded true-negative results in 12 benign breast lesions. There were six cases of false-negative results and nine false-positive results. Four scans were reported as equivocal. The sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV) were 89%, 52%, 84% and 67%, respectively. X-ray mammography diagnosed correctly 37 malignant tumours, and in 12 benign lesions the results were true negatives. Ten studies were reported as equivocal. The sensitivity, specificity, PPV and NPV were 70%, 57%, 80% and 43%, respectively. The accuracy of Tc-99m sestamibi scintimammography was better than X-ray mammography though this was not significant (McNemar's test). Fewer equivocal results were obtained with scintimammography. Scintimammography may therefore have a role in the diagnosis of primary breast cancer when X-ray mammography is equivocal or unhelpful.

Adult↗
PubMed2000

Optimizing techniques in screen-film mammography.

This article provides a practical approach to the steps needed to optimize mammography techniques. Those steps consist of a series of activities that begin with the choice of mammography film, then choosing the optimum film processing for that film type, selecting the appropriate technique factors for exposure, and the proper viewing of processed mammography films. In each area, the basic physics underlying film and film processing, mammography equipment performance, image contrast, and image display, are used to determine optimized mammography techniques.

Data Display↗
PubMed2003

Association between CBE, FOBT, and Pap smear adherence and mammography adherence among older low-income women.

BACKGROUND: Adherence to regular and timely mammography screening, especially in older low-income women, continues to fall below objectives. The primary aim of this study was to examine whether engaging in other cancer screenings was associated with mammography adherence for older women. METHODS: Women, ages 52 and over, without a self-reported history of breast cancer (N = 862) were selected from a larger sample of women residing in Washington, DC, census tracts with >/=30% of households below 200% of the federal poverty threshold. A computer-assisted telephone survey was used to collect data on health care system factors, demographics, cultural beliefs, clinical breast exam (CBE), Pap smear, fecal occult blood testing (FOBT), and mammography. Adherence was defined as receipt of the last two screening tests within recommended intervals for age. RESULTS: After controlling for other variables, adherence to CBE (OR = 4.15; 95% CI, 2.55-6.73) and Pap smear (OR = 1.82; 95% CI, 1.07-3.12) were highly predictive of mammography adherence. Adherence to FOBT (OR = 1.66; 95% CI, 0.97-2.84) was marginally predictive. CONCLUSIONS: Results of this study indicate that nonadherence to other cancer screenings can help identify women in need of additional interventions to improve mammography adherence.

Aged↗
PubMed1989

Mammography in symptomatic breast disease.

The contribution of mammography to the diagnosis of breast cancer was examined in 5080 patients with various breast symptoms. There were 562 breast cancers within this group. The sensitivity of mammography was 88%. Only 18 cancers were detected by mammography alone, and of these 3 were in the other breast. 7 of the remaining 15 cancers had clinical signs which would have been pursued to open biopsy in the absence of mammography. Clinical examination is of paramount importance in the management of patients with symptomatic breast disease. Mammography is most useful when applied in specific situations rather than to screen every patient with breast symptoms.

Adult↗
PubMed1999

The gradient in mammography screening behavior: a lifestyle marker.

The study reports a gradient in adhering to a recommended health behavior-mammography screening. Data were collected on 951 Israeli women, aged 50-74, who were mailed an invitation to a prescheduled mammography screening appointment and were later phone interviewed about their background, their other health behaviors and their health perceptions related to cancer, mammography and self-rated health. The main finding that emerged was a gradient consisting of three groups defined by their adherence to mammography screening: women who declined the invitation to undergo screening (nonattenders, 32%), women who attended a screening upon encouragement (attenders, 45%) and women who initiated the test on their own (self-screenees, 23%). This gradient was shown to be related to structural/background variables (e.g. SES, age, education, ethnicity), other health behaviors and perceptual variables related to health in general and to cancer. For example, self-screenees were of a higher SES, engaged in more health behaviors and were closer to other women who performed a mammography. An analysis carried out to discern where the difference between the three groups lied showed that it was more apparent between the self-screenees and attenders, and that the attenders and nonattenders were more similar to each other. These findings are discussed in terms of health behavior as a discrete phenomenon vs. reflecting a lifestyle. Suggestions for intervention possibilities are presented in light of the finer ranking proposed above (as opposed to the dichotomy of engaging/not engaging in a health behavior).

Aged↗
PubMed2002

Use of Medicare claims data to measure county-level variation in breast carcinoma incidence and mammography rates.

BACKGROUND: National-level population-based data about breast carcinoma incidence and its association with screening mammography are currently not available. METHODS: Inpatient, hospital outpatient and physician/supplier Medicare claims were used to identify incident cases of breast carcinoma in women > or = 65 years from 1996 to 1997 and calculate county-level incidence rates. The 1994-1995 claims data were used to determine county-level rates of mammography, and determine the correlation with incidence. RESULTS: The median 2-year incidence rate for women > or = 65 was 979/100,000, and substantial variation in incidence between counties was observed. (i.e. 25th percentile 789/100,000, 75th percentile 1186/100,000). Two-year county-level mammography rates also varied among counties (i.e. 25th percentile 30.5%, 75th percentile 40.9%) and were higher in white women than in black women (median 36.8 and 26.3%, respectively). Counties with higher rates of mammography also had higher age-adjusted incidence rates. CONCLUSIONS: Medicare claims may provide an alternative source of population-based data, particularly for areas in which registry data are not readily available, or are of limited scope. The data highlight the geographic variation in incidence and screening rates that may be useful for targeted interventions, and also suggest that mammography remains in a growth phase.

Aged↗
PubMed1998

Estimating the accuracy of screening mammography: a meta-analysis.

OBJECTIVE: To estimate the accuracy of mammographic screening. DESIGN: A meta-analysis of published literature. DATA SOURCES: Published English-language randomized controlled trials, case-control studies, and demonstration projects involving screening mammography were identified using recent review articles. We found additional references using MEDLINE searches combining the MeSH terms "mammography," "screening," and/or study authors and locations. STUDY SELECTION: We included all studies that provided information to calculate the true-positive rate (TPR) and the false-positive rate (FPR) for breast cancer screening. DATA EXTRACTION: Reported data were reviewed independently by the authors; calculations were compared and discrepancies resolved. We calculated the sensitivity as the number of breast cancers detected during the first round of screening (true positives) divided by the sum of the true positives and the false negatives (defined as cancer discovered within 1 year of screening). False-positives were determined by biopsy. DATA SYNTHESIS: TPR and FPR values from each study were plotted in receiver operating characteristic (ROC) space. Tests of homogeneity were performed to assess the validity of using summary ROC curves or a single point to summarize the data. The reported TPR and FPR of mammography ranged from 83% to 95% and 0.9% to 6.5%, respectively. The sensitivity of mammography is higher in women over the age of 50 years. CONCLUSIONS: The accuracy of mammography should be recognized and included in discussions about policies for screening for breast cancer. This meta-analysis, by quantifying the expected TPR/FPR, should assist program planners, physicians, and women to understand better the cost and clinical implications of such screening programs.

Adult↗
PubMed2001

The incidence of breast cancer from screening women according to predicted family history risk: Does annual clinical examination add to mammography?

In breast cancer, mutations of predisposition genes such as BRCA-1/2 and other genes as yet uncharacterised are manifest in up to 10% of cases. Although the prior probability of the presence of a breast cancer predisposing gene can be calculated for individual women, there is no published evidence to justify predicted risk as a selection criteria for screening. This study aims to define which patient groups with a significant family history should be screened, and whether clinical examination is necessary in addition to mammography. The Claus model was used to predict breast cancer risk in women with a family history. Women were divided into two groups according to their predicted risk: group I consisted of women at standard risk (lifetime risk less than 1:6) and group II with moderate/high risk (lifetime risk greater than or equal to 1:6). Women were cancer-free at the point of entry, and screening consisted of annual clinical examination and mammography from the age of 35 years. This study consisted of 1500 women in group I and 1078 in group II. The period of observation was 5902.0 and 4327.8 women years, respectively. A total of 31 cancers were detected, 12 in group I and 19 in group II. The median age at diagnosis in group II was 45 years (range 26-66 years) compared with 54.5 years (range 38-63 years) in group I (P=0.03). The relative risk of developing breast cancer in group II was 2.6 (95% confidence interval (CI) 1.2-5.8). When compared with breast cancer incidence in the normal population, the standardised incidence ratio in group II was significantly higher at 2.8 (95% CI: 1.7-4.2). The standardised incidence ratio of women in group I was similar to that of the general population (1.1 (95% CI: 0.6-1.8)). A total of 26/31 (84%) cancers detected were palpable, of which 14 (54%) were not visible on mammography. Approximately one-third of all palpable cancers were detected at routine follow-up. Mammography correctly identified 17/31 cancers (55%), but 29% of these were not palpable. Family history screening programmes are effective and women should be selected for screening according to predicted risk. The younger age of diagnosis in group II justifies screening from an earlier age using both annual clinical examination and mammography.

Adult↗
PubMedDate not supplied

The influence of previous breast cancer upon mammography utilization.

Women with a previous history of breast cancer are at increased risk for developing cancer in the opposite breast. However, the literature is inconsistent regarding whether a previous history of breast cancer is associated positively with mammography utilization. Some studies indicate that women with a previous history of breast cancer are less likely to utilize mammography, although behavioral models of health care theorize that women with a history of breast cancer may be more vigilant regarding the disease. We analyzed responses from 830 women > or =50 years who participated in the 1998 National Health Interview Survey. A significantly greater proportion of women with breast cancer reported had a mammogram in the previous year (73.13%) as compared with women who did not have breast cancer (56.69%). Although a previous history of breast cancer was found to be associated positively with mammography use, women with public sources of health insurance are less likely to report mammography use. Results indicate that women with a previous history of breast cancer appear aware of the necessity for continued screening. However, enabling factors such as type of health insurance continue to exert an influence upon the utilization of mammography.

Aged↗
PubMed2000

Comparison of tomosynthesis methods used with digital mammography.

RATIONALE AND OBJECTIVES: The authors performed this study to investigate the potential applicability of tomosynthesis to digital mammography. Four methods of tomosynthesis-tuned aperture computed tomography (TACT)-backprojection, TACT-iterative restoration, iterative reconstruction with expectation maximization, and Bayesian smoothing-were compared to planar mammography and analyzed in terms of their contrast-detail characteristics. Specific comparisons between the tomosynthesis methods were not attempted in this study. MATERIALS AND METHODS: A full-field, amorphous, silicon-based, flat-panel digital mammographic system was used to obtain planar and tomosynthesis projection images. A composite tomosynthesis phantom with a centrally located contrast-detail insert was used as the object of interest. The total exposure for multiple views with tomosynthesis was always equal to or less than that for the planar technique. Algorithms were used to reconstruct the object from the acquired projections. RESULTS: Threshold contrast characteristics with all tomosynthesis reconstruction methods were significantly better than those with planar mammography, even when planar mammography was performed at more than twice the exposure level. Reduction of out-of-plane structural components was observed in all the tomosynthesis methods analyzed. CONCLUSION: The contrast-detail trends of all the tomosynthesis methods analyzed in this study were better than those of planar mammography. Further optimization of the algorithms could lead to better image reconstruction, which would improve visualization of valuable diagnostic information.

Breast Neoplasms↗
PubMed2006

Screening mammography and risk of breast cancer in BRCA1 and BRCA2 mutation carriers: a case-control study.

BACKGROUND: Screening mammography is associated with a small dose of radiation to the breast, and women with increased genetic risk might be particularly sensitive to the DNA-damaging effects of ionising radiation. We aimed to assess whether exposure to ionising radiation through mammography screening was associated with risk of breast cancer in BRCA1 or BRCA2 mutation carriers. METHODS: We identified 1600 cases of breast cancer and 1600 controls without breast cancer who were matched for BRCA mutation, date of birth (within 1 year), and country of residence from an international registry of BRCA1 and BRCA2 mutation carriers. We used a questionnaire to inquire about whether participants had ever had screening mammography, and, if so, the age at which they first had the procedure. RESULTS: We found no association between ever having screening mammography and risk of breast cancer (odds ratio [OR] 1.03 [95% CI 0.85-1.25], adjusted for parity, oral-contraceptive use, ethnic origin, and bilateral oophorectomy). The association was much the same for BRCA1 mutation carriers and BRCA2 mutation carriers (1.04 [0.84-1.29] vs 1.06 [0.67-1.66], respectively, adjusted for parity, oral-contraceptive use, ethnic origin, and bilateral oophorectomy). INTERPRETATION: These findings do not lend support to the idea that exposure to ionising radiation through routine screening mammography contributes substantially to the burden of breast cancer in BRCA1 and BRCA2 mutation carriers. Prospective studies are needed to confirm the results of this initial report, and, where possible, these studies should assess a more appropriate endpoint of total exposure.

Adult↗
PubMed1989

Mass mammography. The time for reappraisal.

Of the four randomized controlled trials of mass mammography completed to date, the New York HIP trial used obsolete technology and was not designed to assess mammography in the absence of physical examination; the Swedish Two-County trial had serious methodological flaws; the U.K. trial was incompletely documented but showed no significant benefit; and the Malmö trial, which was perfect in design and execution, showed no benefit. Paradoxicially, with each successive trial and an increasing sophistication of mammography, the benefit of screening was becoming not greater but less. This may be summarized by comparing the number of women who would have to be offered mammography for one breast cancer death prevented or postponed in the respective trials: 5,000 in the HIP trial, 13,000 in the Two-County trial, 18,000 in the U.K. trial, and 68,000 in the Malmö trial. The enthusiasts in favor of mass mammography have created an atmosphere of false optimism. They have not informed the public about the very small potential benefit nor about the risks associated with screening, especially the risks of false positive diagnoses and of unnecessary surgical operations. This is an unacceptable situation, and the ethical vacuum in which population screening takes place needs to be filled with guidelines to protect women who are "targeted" for screening.

Data Collection↗