Biomedical subjects

Barbara Valanis

Publications and source records attributed to Barbara Valanis.

8 recordsLinked to original sources

PubMed2004

The Beta-Carotene and Retinol Efficacy Trial: incidence of lung cancer and cardiovascular disease mortality during 6-year follow-up after stopping beta-carotene and retinol supplements.

BACKGROUND: The Beta-Carotene and Retinol Efficacy Trial (CARET) tested the effect of daily beta-carotene (30 mg) and retinyl palmitate (25,000 IU) on the incidence of lung cancer, other cancers, and death in 18,314 participants who were at high risk for lung cancer because of a history of smoking or asbestos exposure. CARET was stopped ahead of schedule in January 1996 because participants who were randomly assigned to receive the active intervention were found to have a 28% increase in incidence of lung cancer, a 17% increase in incidence of death and a higher rate of cardiovascular disease mortality compared with participants in the placebo group. METHODS: After the intervention ended, CARET participants returned the study vitamins to their study center and provided a final blood sample. They continue to be followed annually by telephone and mail self-report. Self-reported cancer endpoints were confirmed by review of pathology reports, and death endpoints were confirmed by review of death certificates. All statistical tests were two-sided. RESULTS: With follow-up through December 31, 2001, the post-intervention relative risks of lung cancer and all-cause mortality for the active intervention group compared with the placebo group were 1.12 (95% confidence interval [CI] = 0.97 to 1.31) and 1.08 (95% CI = 0.99 to 1.17), respectively. Smoothed relative risk curves for lung cancer incidence and all-cause mortality indicated that relative risks remained above 1.0 throughout the post-intervention follow-up. By contrast, the relative risk of cardiovascular disease mortality decreased rapidly to 1.0 after the intervention was stopped. During the post-intervention phase, females had larger relative risks of lung cancer mortality (1.33 versus 1.14; P = .36), cardiovascular disease mortality (1.44 versus 0.93; P = .03), and all-cause mortality (1.37 versus 0.98; P = .001) than males. CONCLUSIONS: The previously reported adverse effects of beta-carotene and retinyl palmitate on lung cancer incidence and all-cause mortality in cigarette smokers and individuals with occupational exposure to asbestos persisted after drug administration was stopped although they are no longer statistically significant. Planned subgroup analyses suggest that the excess risks of lung cancer were restricted primarily to females, and cardiovascular disease mortality primarily to females and to former smokers.

Adult↗

PubMed2003

Screening rarely screened women: time-to-service and 24-month outcomes of tailored interventions.

BACKGROUND: Managed care organizations and others reaching out to underscreened women seek strategies to encourage mammogram and Pap screening. METHODS: Female HMO members aged 50-69 years and overdue for a mammogram and a Pap test (n = 501) were followed for 24 months after interventions began. An Outreach intervention (tailored letters and motivational telephone interviews), an Inreach intervention (motivational interview delivered in clinics), and a Combined Inreach/Outreach intervention were compared to Usual Care at 24 months. Logistic regression and Cox hazard models examined predictors of obtaining screening services and time-to-service, respectively. RESULTS: Compared with Usual Care, the odds of Outreach women aged 50-64 obtaining a mammogram (OR = 2.06; 95% CI = 1.59-5.29), a Pap test (OR = 1.97; 95% CI = 1.12-3.53), or both (OR = 2.53; 95% CI = 1.40-4.63) remained significantly increased at 24 months. The average time-to-service for Outreach women was reduced by 4 months. Outreach effects persisted despite intensive, ongoing health plan efforts to improve screening of all women. CONCLUSIONS: This brief, tailored outreach intervention was an effective strategy for encouraging cervical and breast cancer screening among women overdue for both screening services. It also shortened time-to-service, an important benefit for early detection and treatment. Alternative strategies are needed for women who remain unscreened.

Aged↗

PubMed2003

Consumer knowledge and opinions of genetic testing for breast cancer risk.

Although clinical evidence shows the value of genetic testing for breast cancer risk, consumer opinion about the test-and its outcomes-may differ. We conducted focus groups with white and black women to assess consumer opinions about genetic testing for breast cancer risk. We conducted 5 focus groups with women between the ages of 30 and 79. Participants were not selected for personal or family history of breast cancer. The findings of these focus groups suggest that consumers' understandings of risk, genetics, and genetic testing can differ considerably from clinical definitions and interpretations. Clinical information appeared to be interpreted by participants based on personal experience and beliefs about genetics and disease causation. Our findings also suggest that many consumers have incomplete or erroneous knowledge about genetic testing (eg, whether the test should be repeated annually). Participants gave greater attention to the emotional and social consequences of positive test results than to their physical outcomes, suggesting that emotional and social issues may be more salient in decision making about whether to be tested. Sensitivity to the possibility that consumers may use nonclinical criteria to assess the value of genetic testing can help clinicians counsel women about testing and what actions to take after testing.

Adult↗

PubMed2003

A model for examining predictors of outcomes of telephone nursing advice.

Although telephone advice nursing is the fastest-growing nursing specialty, useful information to guide managers' decisions about how best to structure and support advice services to achieve desired outcomes is unavailable. We identified issues and variables relevant to outcomes of telephone advice from the perspectives of callers, nurses, and the system. Subsequently, we derived a model for studying factors affecting nursing advice outcomes that will help managers identify modifiable factors to improve outcomes of care.

Attitude of Health Personnel↗

PubMed2003

Making it work: organization and processes of telephone nursing advice services.

Efforts of health plans to balance service quality with cost control have spurred rapid growth in telephone nursing advice services. Service system design can affect costs, patient outcomes, and staff retention. Research has not addressed how the organization of nursing services affects practice outcomes in telephone advice settings. We describe observed variations in telephone advice nursing services and the organizational and process factors the nurses identified as supporting or hindering their work.

Attitude of Health Personnel↗

PubMed2003

Tool development for measuring caller satisfaction and outcome with telephone advice nursing.

Caller descriptions and evaluations of their experiences with telephone advice services provide unique information that correlates highly with objective measures of quality and can help interpret data from other sources. An author-developed questionnaire assessed caller outcomes of telephone nursing advice in Phase I an iterative, purposive sample of 40 callers was interviewed by phone. An emergent design was used to develop questions, analyze constructs of interest, and test questions for a draft caller questionnaire, which was tested in Phase II. Responses to the questionnaire provided information about caller characteristics, advice call characteristics, and nurse practice behaviors that caused the authors to further revise the questionnaire. The resulting tool provides feedback to advice nurses about the outcomes of their practice and information to design orientation and development programs and support fund allocation decisions.

Counseling↗

PubMed2003

Integrating prenatal-postnatal smoking interventions into usual care in a health maintenance organization.

Consistent with the increasing national emphasis on providing health promotion in clinical care settings, Stop Smoking for OuR Kids (STORK), a research-derived, prenatal-postnatal smoking cessation intervention, was implemented throughout prenatal clinics, inpatient postpartum services, and pediatric clinics of Kaiser Permanente Northwest. Process data collected during the project rollout and maintenance to monitor the clinical practices of clinicians and staff members, patient responses to the intervention, and penetration of the intervention into the health maintenance organization priority population of prenatal smokers high-lighted barriers to intervention delivery. These barriers fell into three categories related to the smoking intervention design, clinicians and staff members, and the organization. By monitoring the intervention implementation process, such problems were identified early. This allowed for implementing strategies to overcome many of these barriers and to assess their effectiveness. Keys to implementation success included simplifying the intervention activities, considering stakeholder needs, and providing tangible organizational resources and goals.

Continuity of Patient Care↗

PubMedDate not supplied

Nursing.

Explore the source record for details and available documents.

Career Choice↗