Association between meat consumption and risk of breast cancer: Findings from the Sister Study.

Meat consumption has been postulated to increase the risk of breast cancer, but this association has not been consistently seen. We examined the association between consumption of different types of meat, meat mutagens and incident invasive breast cancer. Information on consumption of different meat categories and meat cooking practice behaviors was obtained from 42,012 Sister Study participants who completed a Block 1998 Food Frequency Questionnaire at enrollment (2003-2009) and satisfied eligibility criteria. Exposure to meat type and meat mutagens was calculated, and associations with invasive breast cancer risk were estimated using multivariable Cox proportional hazards regression. During follow-up (mean, 7.6 years), 1,536 invasive breast cancers were diagnosed at least 1 year after enrollment. Increasing consumption of red meat was associated with increased risk of invasive breast cancer (HRhighest vs. lowest quartile :1.23, 95% CI: 1.02-1.48, ptrend = 0.01). Conversely, increasing consumption of poultry was associated with decreased invasive breast cancer risk (HR highest vs. lowest quartile : 0.85; 95% CI: 0.72-1.00; ptrend = 0.03). In a substitution model with combined red meat and poultry consumption held constant, substituting poultry for red meat was associated with decreased invasive breast cancer risk (HR highest vs. lowest quartile of poultry consumption: 0.72, 95% CI: 0.58-0.89). No associations were observed for cooking practices, estimated heterocyclic amines or heme iron from red meat consumption with breast cancer risk. Red meat consumption may increase the risk of invasive breast cancer, whereas poultry consumption may be associated with reduced risk. Substituting poultry for red meat could reduce breast cancer risk.

Elements of Potentially Inappropriate Interventions and Patient Prognostic Profiles at the End of Life in Cardiology: A Qualitative Analysis.

Background: The determination of what makes a medical treatment inappropriate is unclear with a small likelihood of consensus. Objectives: This study aimed to explore how clinicians in cardiology perceive "inappropriate treatment" and to collate the common profiles of cardiology patients receiving likely "inappropriate treatment" as perceived by clinicians in a multiethnic Asian context. Methods: A qualitative study was conducted using semistructured in-depth interviews with 32 clinicians involved in the care for cardiology patients at a large national cardiology center in Singapore. Results: Clinicians' accounts indicated that elements of potentially inappropriate treatment encompass patient-related treatment elements as well as quantitative and probability-based elements such as resource use and probability of treatment benefit. Patient prognostic profiles, characterized as likely to have received inappropriate treatment by clinicians, were organized into six categories according to demographic, clinical, and functional factors. Conclusions: The perception of inappropriateness of treatments among clinicians in cardiology was primarily focused on patient-related outcomes. Collated patient profiles may serve as meaningful indicators of patient cases receiving potentially inappropriate treatment for further research and intervention.

Examining predictors for 6-month mortality and healthcare utilization for patients admitted for heart failure in the acute care setting.

BACKGROUND: Acute heart failure (AHF) is a leading cause of mortality and hospitalization. Past studies reported increased healthcare spending in the last year of life in high-income countries, and this has been characterized as inappropriate healthcare resource utilization. The study aimed to examine potentially (in)appropriate healthcare utilization by comparing healthcare utilization patterns across predicted and observed 6-month mortality among patients admitted for HF. METHODS: We conducted a retrospective cohort study among patients presenting at the emergency department (ED) of a tertiary hospital with HF as primary diagnosis and admitted after their ED discharge. We used LASSO Cox proportional hazards models to predict 6-month mortality, and estimated healthcare utilization patterns of predicted and observed mortality across inpatient healthcare services. RESULTS: 3946 patients were admitted into the emergency department with a primary diagnosis of HF. From 57 candidate variables, 17 were retained in the final 6- month mortality model (C-statistic 0.66). Patients who died within 6-months of ED admission had longer length of stay (LOS) and less inpatient surgeries than those who survived. Patients with a greater predicted mortality risk were admitted to the ICU more often and had a longer LOS than those with a lower predicted mortality risk. CONCLUSIONS: There were significant differences in healthcare resource utilization in patients admitted for AHF across predicted versus actual mortality. Lack of information on patients' preferences prevents the estimation of (in)appropriateness. Future studies should account for these considerations to estimate inappropriate healthcare utilization among these patients.

Factors Influencing Potentially Futile Treatments at the End of Life in a Multiethnic Asian Cardiology Setting: A Qualitative Study.

BACKGROUND: Modern medicine enables clinicians to save lives and prolong time to death, yet some treatments have little chance of conferring meaningful benefits for patients nearing the end-of-life. What clinicians perceive as driving futile treatment in the non-Western healthcare context is poorly understood. AIM: This study aimed to explore clinicians' perceptions of the factors that influence futile treatment at the end of life within a tertiary hospital cardiac care setting. DESIGN: We conducted semi-structured interviews with cardiologists, cardiac surgeons, and palliative care doctors from a large national cardiology center in Singapore. Interviews were transcribed verbatim and thematically analyzed. RESULTS: A total of 32 clinicians were interviewed. We identified factors that contributed to the provision of potentially futile treatment in these theme areas: patient- and family-related, clinician-related, and institutional and societal factors. Family roles and cultural influences were most commonly cited by participants as affecting end-of-life decisions and altering the likelihood of futile treatment. Specialty-specific alignments within cardiology and availability of healthcare resources were also important factors underpinning futile treatment. CONCLUSION: Family-related factors were a primary driver for futile treatment in a non-Western, multicultural setting. Future interventions should consider a targeted approach accounting for cultural and contextual factors to prevent and reduce futile treatment.