Ethical and regulatory challenges of large language models in medicine.

With the rapid growth of interest in and use of large language models (LLMs) across various industries, we are facing some crucial and profound ethical concerns, especially in the medical field. The unique technical architecture and purported emergent abilities of LLMs differentiate them substantially from other artificial intelligence (AI) models and natural language processing techniques used, necessitating a nuanced understanding of LLM ethics. In this Viewpoint, we highlight ethical concerns stemming from the perspectives of users, developers, and regulators, notably focusing on data privacy and rights of use, data provenance, intellectual property contamination, and broad applications and plasticity of LLMs. A comprehensive framework and mitigating strategies will be imperative for the responsible integration of LLMs into medical practice, ensuring alignment with ethical principles and safeguarding against potential societal risks.

Older adult patient preferences for the content and format of prescription medication labels - A best-worst scaling and discrete choice experiment study.

BACKGROUND: Patient preferences for the content and format of prescription medication labels (PMLs, i.e., sticker labels placed on medication bottles/packets at dispensing) have been extensively studied. However, accommodating all preferences on PMLs is impractical due to space limitations. Understanding how patients prioritise the content and format attributes of PMLs can inform improvements while working within PML space constraints. OBJECTIVES: We aimed to (1) identify a ranking of medication-related content attributes to be prioritised on PMLs using best-worst scaling (BWS), and (2) determine the relative importance of format attributes when incorporated onto PMLs using discrete choice experiment (DCE), from the perspective of older adult patients in Singapore. METHODS: Attributes were informed by our prior qualitative study and PML best practice guidelines. For the BWS component, the assessed content attributes were indication, precautions, interaction or paired medicines, food instructions, side effects, expiry date, and missed dose action, all of which are currently not legally mandated on PMLs in Singapore. A BWS object case was used to rank the content attributes. For the DCE component, in a series of questions, participants were asked to choose between two PML options each time, that varied in the presentation of dosage-frequency instructions, font size, presentation of dosage, presentation of precautions, and font colour of precautions. A mixed logit model estimated the relative utilities of format attribute levels, enabling the calculation of importance scores of the format attributes. RESULTS: The study recruited 280 participants (mean age: 68.8 ± 5.4 years). The three most-preferred content attributes were indication, precautions and interaction or paired medicines. The top three format preferences were tabular style presentation of dosage-frequency instructions, large font size and precautions in red colour. CONCLUSIONS: Healthcare institutions should consider improving their PMLs based on the leading content and format preferences voiced by older adult patients. The methodology adopted in the study can also be used for aligning the content and format of other patient education materials with patient preferences.

Prevalence of health literacy and its correlates from a national survey of older adults.

BACKGROUND: Health literacy (HL) is an important determinant of health. Sub-optimal HL can have profound consequences for individuals and health systems. However, little is known about the HL of older Singaporeans. OBJECTIVE: This study determined the prevalence, socio-demographic and health-related correlates of limited and marginal HL among older Singaporeans (≥65 years). METHODS: Data from a national survey were analysed (n = 2327). HL was measured using the 4-item BRIEF with a 5-point response scale (range 4-20), and classified as limited, marginal, and adequate. Multinomial logistic regression models were applied to identify correlates of limited and marginal HL versus adequate HL. RESULTS: The weighted prevalence of limited HL was 42.0%, marginal HL was 20.4% and adequate HL was 37.7%. In adjusted regression analysis, older adults in advanced age groups with lower education and those living in 1-3 room flats had higher risk of limited HL. Furthermore, having ≥3 chronic diseases (Relative Risk Ratio [RRR] = 1.70, 95% Confidence Interval [95% CI] = 1.15, 2.52), poor self-rated health (RRR = 2.07, 95% CI = 1.56, 2.77), vision impairment (RRR = 2.08, 95% CI = 1.55, 2.80), hearing impairment (RRR = 1.57, 95% CI = 1.15, 2.14) and mild cognitive impairment (RRR = 4.87, 95% CI = 2.12, 11.19) were also associated with limited HL. The likelihood of marginal HL was higher among those with lower education, ≥2 chronic diseases, poor self-rated health (RRR = 1.48, 95% CI = 1.09, 2.00), vision impairment (RRR = 1.45, 95% CI = 1.06, 1.99) and hearing impairment (RRR = 1.50, 95% CI = 1.08, 2.08). CONCLUSIONS: Over two-thirds of older adults faced difficulties in reading, understanding, exchanging, and using health information and resources. There is a pressing need to create awareness about the issues that could result from the mismatch between healthcare system demands and the HL of older adults.

The Impact of Statin Use and Breast Cancer Recurrence - A Retrospective Study in Singapore.

Introduction: Statins, HMG-CoA reductase inhibitors, are commonly used cholesterol-lowering medications which are also increasingly recognized to have anti-cancer properties for various cancers, including breast cancer. Most clinical evidence supports a protective effect of statin on reducing breast cancer recurrence, particularly in hormone-receptor positive breast cancers.This study seeks to study the impact of statin use on breast cancer recurrence in an Asian population. Methods: This is a retrospective study of patients diagnosed with breast cancer at the National Cancer Centre and Singapore General Hospital from 2005-2015. Statin use was defined as use after surgery. Associations between statin use, breast cancer recurrence and overall survival were estimated using Cox proportional hazards regression with adjustment for age, TNM stage, grade, ER/HER2 status, and co-morbidities. Associations between statin-use and disease-specific survival were estimated using competing risks regression. Results: A total of 7858 females with breast cancer were studied, 1353(17.2%) were statin users, 6505(82.8%) were non-statin users, with a median follow-up of 8.67 years. Distribution of cancer stage, histology, molecular subtypes and grades were similar in both groups. Estrogen receptor(ER) positive (HR 0.57,95%CI 0.43-0.76,p<0.001) and HER2 negative (HR 0.74,95%CI 0.57-0.96,p=0.026) invasive cancers had a lower risk of recurrence in statin users. Statin users trended towards a long term recurrence-risk reduction (all subtypes,HR 0.48,p=0.002; ER-, HR 0.34,p=0.036; HER2+,HR 0.10,p=0.002). The risk-reduction benefit is not appreciated in statin users with DCIS, possibly due to small recurrence event numbers. Disease-specific survival benefit was seen in statin users with ER+ cancers (adjusted SHR 0.71,95%CI 0.53-0.96,p=0.027), especially ER+ invasive cancers (adjusted SHR 0.72, 95%CI 0.53-0.97,p=0.028), but with no statistically significant benefit in overall survival for statin users (all subtypes). Conclusion: This is the first known retrospective study on the effect of statin use and breast cancer recurrence in an Asian population. Similar to previous international studies, statin use is associated with a risk reduction in breast cancer recurrence. This is especially beneficial in patients who have ER+ and HER2- invasive breast cancer. Statin use is also associated with a reduced risk of breast cancer recurrence in all subtypes of breast cancer in the long term (>6 years post diagnosis).

Burnout and resilience among pharmacy technicians: A Singapore study.

BACKGROUND: Burnout describes emotional exhaustion (EE), depersonalization (DP), and low personal achievement caused by work and is known to bring about negative consequences to practitioners, patients, and health systems. Various organizational and personal factors, such as organizational strategies and resilience, have been associated with this phenomenon. However, there is a paucity of data describing the prevalence of burnout among pharmacy staff within Singapore and Asia, especially in the pharmacy technician (PT) population. OBJECTIVES: This study aimed to (1) quantify burnout in PTs in patient-care sectors in Singapore and (2) explore factors that may be associated with burnout. METHODS: A cross-sectional survey among PTs in patient-care areas in Singapore, which includes hospitals, primary and secondary care institutions, and retail pharmacies, across both public and private sectors was conducted from February to April 2020. The Maslach Burnout Inventory - Human Services Survey and Brief Resilience Scale were used to assess burnout and resilience among participants. Demographic, employment, and well-being information were also collected and summarized. Univariate analysis and multivariate logistic regression were used to assess associations between burnout and potential risk and impact factors. RESULTS: Slightly more than half (52.0%) of PTs reported burnout (EE score ≥27 or DP ≥10 or both). Statistically significant factors associated with burnout include resilience, age, years of experience, ethnicity, marital status, nationality, highest qualifications, pharmacy-related certification, full-time employment status, and work hours. Impact associated with burnout includes intent for job change, job satisfaction, sleep, and presence of mental conditions. Statistically significant reported reasons for burnout and ways to build resilience were also elucidated. CONCLUSION: Burnout affects most PTs in Singapore and is primarily driven by workload and nature of their work, low resilience, and poor social support structures. National and organizational efforts are needed to arrest the vicious cycle that propagates burnout in PTs.

A Study of Medication Use of Cancer and Non-Cancer Patients in Home Hospice Care in Singapore: A Retrospective Study from 2011 to 2015.

Background: In recent years, there has been a rising demand for home hospice care in Singapore and globally. Studies have shown that polypharmacy and the use of potentially inappropriate medications (PIMs) remain prevalent in palliative care patients. This is commonly associated with increased adverse drug reactions and hospitalization. However, research on medication use in hospice care and its appropriateness is lacking in Asian settings. Objective: (1) To describe the medication use among cancer and non-cancer patients in home hospice care settings in Singapore at two time points, on the day of referral and at death. (2) To describe the discontinuation patterns of medications and assess their appropriateness. Design: This retrospective study analyzed 6158 cancer and 780 non-cancer cases referred to HCA Hospice Care (HCA), Singapore. Sociodemographic, clinical, and medication data were extracted from electronic medical records. The OncPal Deprescribing Guideline (OncPal) was utilized to assess the appropriateness of discontinuation of medications. Results: Non-cancer patients had a higher mean number of medications at admission and death, with 7.84 and 7.07 medications, respectively (p < 0.05), compared with cancer patients, with 5.65 and 5.69 medications, respectively (p = 0.372). The top medications for all patients were laxatives, opioids, and proton pump inhibitors (PPIs). These were mainly used for symptom control. PPI was the main PIM identified by OncPal. Conclusion: Despite being close to end of life and on hospice care, majority of patients still experienced significant medication burden. Continuous assessment of PIMs for their appropriateness based on clinical indications is imperative to reduce polypharmacy.