Category: Statistics

JAMA Netw Open. 2024 Nov 4;7(11):e2446345. doi: 10.1001/jamanetworkopen.2024.46345.

ABSTRACT

IMPORTANCE: The American College of Surgeons (ACS) operative standards were established to detail critical elements of cancer surgery, reduce technical variation, and improve outcomes. Two of the 6 operative standards target adequate axillary surgery for breast cancer. The potential association of the operative standards with short-term oncologic outcomes, such as nodal yield and nodal positivity rates, is currently unknown.

OBJECTIVE: To evaluate the potential association of the ACS operative standards with short-term oncologic outcomes in breast cancer.

DESIGN, SETTING, AND PARTICIPANTS: A cohort study was performed using data on 1 201 317 women 18 years or older who underwent sentinel lymph node biopsy (SLNB) or axillary lymph node dissection (ALND) for invasive breast cancer from January 1, 2012, to December 31, 2020. Patients were identified using the National Cancer Database (NCDB), a clinical oncology database encompassing approximately 70% of new cancer diagnoses, sourced from hospital registry data from 1317 facilities. Statistical analysis was performed from October 2023 to June 2024.

EXPOSURE: Sentinel lymph node biopsy or ALND.

MAIN OUTCOMES AND MEASURES: Reliability-adjusted facility-level lymph node yield and nodal positivity rate for each procedure were calculated using generalized linear mixed models, Poisson regression, and logistic regression with facility-level random intercepts.

RESULTS: The cohort included 1 201 317 women with a median age of 62 years (IQR, 53-70 years). Facility-level nodal yield ranged from 1 to 6 for SLNB and from 6 to 22 for ALND. Median facility-level nodal yield for SLNB was 2.6 (IQR, 2.3-3.0) and the nodal positivity rate for SLNB was 12.2% (IQR, 11.0%-13.7%), with rates ranging from 6% to 21%. A weak correlation between facility-level lymph node yield and nodal positivity was observed (Spearman correlation coefficient, 0.17). Median nodal upstaging rate (≥4 positive nodes) for ALND was 30.5% (IQR, 26.5%-35.0%), with rates ranging from 11% to 54%; median nodal yield was 12.2 (IQR, 10.9-13.6). A strong correlation between nodal yield and nodal upstaging rates was observed (Spearman correlation coefficient, 0.53).

CONCLUSIONS AND RELEVANCE: In this cohort study of women undergoing axillary surgery for invasive breast cancer, facility-level variation in lymph node yield was present for both SLNB and ALND, which could potentially be improved through the ACS operative standards. However, this variation had mixed associations with nodal positivity and upstaging rates, suggesting the association of the ACS operative standards with oncologic outcomes may be mixed.

PMID:39565622 | DOI:10.1001/jamanetworkopen.2024.46345

Clin Exp Dermatol. 2024 Nov 20:llae498. doi: 10.1093/ced/llae498. Online ahead of print.

ABSTRACT

BACKGROUND: The lack of dermatological knowledge by non-dermatologists is exposed by the increasing number of requests made for inpatient dermatological consultations. Patients have been commenced on inappropriate treatment because of poor dermatology training.

OBJECTIVES: To determine the burden and accuracy of inpatient dermatology referrals.

METHODS: A retrospective cohort study using paper inpatient dermatology referrals from one Health Board between June 2007 and July 2021. Data analysis included timing of referrals; referring speciality; diagnosis and treatment. Descriptive statistics, using Excel, were used for analyses.

RESULTS: The average number of referrals per year was 106 (79-166). The most frequent day of referral was Monday (26%). Most referrals were from medical teams (73%).Differential diagnosis was suggested by the referring team in 59% of referrals. In only 29% of referrals the dermatology team agreed with the differential diagnosis. There was discrepancy in the correctness of diagnosis in all categories, however the paediatricians were most likely to offer a correct differential (44%). In 44% of referrals treatment was commenced by the referring team, most commonly antibiotics.

CONCLUSIONS: There is an extra burden on dermatology teams to cover inpatients. Our figures highlight two important issues – the need for better dermatological education in medical schools to improve diagnosis accuracy and management of conditions as well as the need to recognise the need for an inpatient dermatology service to review inpatient referrals and advise in diagnosis and management of dermatology cases on the wards, and to protect the service from being uncoupled from the main hospital.

PMID:39565592 | DOI:10.1093/ced/llae498

Methods Mol Biol. 2025;2871:179-191. doi: 10.1007/978-1-0716-4217-7_17.

ABSTRACT

The planarian Schmidtea mediterranea shows nutrient-dependent whole-body plasticity. Starvation leads to body size reduction, while feeding triggers growth. The balance of cell proliferation and cell death controls cell number, driving organismal body size. Here, we uncovered the role of FoxO in controlling cell death through TUNEL and caspase-3 assays and bak qPCR detection in foxO RNAi planarians.

PMID:39565589 | DOI:10.1007/978-1-0716-4217-7_17

Radiol Med. 2024 Nov 20. doi: 10.1007/s11547-024-01931-7. Online ahead of print.

ABSTRACT

OBJECTIVE: The purpose of this study is to demonstrate the consistency and reproducibility of quantitative SPECT/CT by evaluating the maximum SUV (SUV_max) in normal bone, to provide the reference value of metastatic lesions, and to evaluate the clinical implication of SUV_max changes of osseous metastasis during treatment.

MATERIAL AND METHODS: This prospective imaging sub-study was performed as part of a phase 2 clinical trial of patients with metastatic castration-resistant prostate cancer (mCRPC) randomized to the combination of pembrolizumab plus radium-223 or to radium-223 alone (NCT03093428). The maximum standardized uptake value (SUV_max) and mean Hounsfield Unit (HU_mean) of normal bone as well as metastases were measured using a 1.5 cm region of interest (ROI) on CT and xSPECT Quant reconstruction on the baseline study (S₀) and restaging scans. The most tracer-avid metastatic lesion in each patient on S₀ was selected as a target lesion, and changes of SUV_max and HU_mean of the target lesion were compared on the first restaging scan (S₁). Correlations between the percentage changes of SUV_max of the target lesion with alkaline phosphatase (ALP) and prostate-specific antigen (PSA) were assessed.

RESULTS: Twenty-one patients were enrolled on the imaging sub-study of which 15 had paired baseline S₀ and S₁ data. On S₀, the median SUV_max and HU_mean of normal bone was 5.85 g/mL (0.42-14.98) and 133.03 (range, 28.47-461.91), respectively. The median SUV_max and HU_mean of metastasis were 42.2 g/mL (range, 17.96-143.36) and 549.58 (177.87-1107.64), respectively. There was significant reduction in SUV_max (- 40.1%, range – 86.2 to + 23.5%), p < 0.001) and increase in HU_mean (+ 8.3%, range – 11.3 to + 61.7%, p = 0.0479, Wilcoxon signed-rank test) of target lesions between S₀ and S₁. Spearman correlation between the percentage changes of SUV_max of a target lesion and both serum PSA (r = 0.33, p = 0.226) and ALP (r = 0.45, p = 0.094) were not statistically significant.

CONCLUSION: Quantitative SPECT/CT provides consistent and objective imaging parameters, which can help monitor tumor burden. The median SUVmax of metastasis at baseline was roughly 7.2-fold higher than normal bone. Quantitative SPECT/CT may help visualize the early osteoblastic treatment response in prostate cancer patients treated with radium-223 alone or combined with pembrolizumab.

PMID:39565570 | DOI:10.1007/s11547-024-01931-7

Drugs Real World Outcomes. 2024 Nov 20. doi: 10.1007/s40801-024-00452-z. Online ahead of print.

ABSTRACT

BACKGROUND: Hemophilia A (HA) treatment strategies aim to manage bleeding episodes and improve patients’ quality of life. This study investigates the effectiveness of a preventative approach using intermediate-dose prophylaxis with standard half-life FVIII products in reducing bleeding rates and enhancing the quality of life for patients with severe HA.

METHODS: A 4-year prospective longitudinal study followed 35 patients with severe HA (without FVIII inhibitors) who transitioned from a reactive treatment approach to intermediate-dose prophylaxis in Taiwan from 2014 until 2018. The study tracked annual bleeding rates (ABR) and annual joint bleeding rates (AjBR) alongside associated costs and patient-reported quality-of-life measures.

RESULTS: Prophylaxis significantly reduced both ABR and AjBR compared with the previous treatment. After one year, ABR and AjBR decreased by 76.9% and 72.5%, respectively, with further reductions to 91.0% and 90.8% after 4 years (p < 0.001). While the average annual cost of factor VIII concentrate increased by 41.0% in the first year, the incremental cost-effectiveness ratio demonstrated ongoing benefits from ABR avoidance over the 4 years. Additionally, patients reported significant improvements in quality-of-life measures following the switch to prophylaxis (p = 0.036).

CONCLUSION: Intermediate-dose prophylaxis effectively reduced bleeding rates and improved quality of life in patients with severe HA. Despite initial cost increases, the intervention became cost effective over time. This study provides valuable data for healthcare policymakers, highlighting the long-term benefits of prophylaxis as a preventative approach for managing bleeding and improving overall well-being in patients with severe HA.

PMID:39565566 | DOI:10.1007/s40801-024-00452-z

Qual Life Res. 2024 Nov 20. doi: 10.1007/s11136-024-03837-3. Online ahead of print.

ABSTRACT

PURPOSE: To develop the Norwegian value set for the EQ-5D-5L based on interviews with a representative sample of the Norwegian adult population.

METHODS: Random and quota sampling were used to recruit the sample of adults (age> 18 years) representative of the Norwegian general population. Data collection followed EQ-VT 2.1 undertaken before and after the COVID-19 pandemic from November 2019 to December 2022, using PC-assisted and video conferencing interviews, respectively. Each respondent valued 10 health states using composite time trade-off (cTTO) and 7 health states using a discrete choice experiment (DCE). Different statistical models were assessed for logical consistency and predictive accuracy using cTTO and DCE data alone or in combination as hybrid models.

RESULTS: Of the 1,321 respondents, 1,237 met inclusion criteria. All statistical models demonstrated logical consistency. The weighted hybrid model combining both cTTOand DCE data was preferred and had the highest predictive accuracy. Predicted values ranged from -0.453 to 1, and the dimension of anxiety/depression was the most highly valued by respondents, followed by pain/discomfort, self-care, mobility, and usual activities. These findings are not dissimilar to those for most Western European countries, and regression coefficients are closest to those for other Scandinavian countries.

CONCLUSION: This study provides the Norwegian value set for the EQ-5D-5L based on health state values obtained from members of the adult general population in Norway. This is an important contribution to economic evaluation and the broader application ofthe EQ-5D-5L in Norway including clinical and health services research, and quality measurement.

PMID:39565555 | DOI:10.1007/s11136-024-03837-3

Qual Life Res. 2024 Nov 20. doi: 10.1007/s11136-024-03831-9. Online ahead of print.

ABSTRACT

PURPOSE: Adults with arthritis experience poor health-related quality of life (HRQOL), though research often focuses on single HRQOL outcomes or summary scores. We aimed to identify HRQOL profiles in adults with different arthritis types and determine risk and protective factors.

METHODS: Data including PROMIS-29 Profile v2.1 and PROMIS Short Form v2.0 – Emotional Support 4a were collected through a national foundation’s online survey of adults with arthritis in the U.S. We used latent profile analysis (LPA) to characterize the heterogeneity in arthritis patients by clustering them into HRQOL profiles, based on statistical model fit and clinical interpretability. We fit a multinomial logistic regression model with HRQOL profile assignment as the outcome to determine associations with protective and risk factors.

RESULTS: We included 25,305 adults with arthritis. The LPA results favored a five-HRQOL profile solution (entropy = 0.83). While some profiles displayed better HRQOL in some domains, 93% of the sample displayed impacted pain and physical functioning. One profile (20%) displayed mean T-scores nearly 2 standard deviations below the population mean. Despite poor physical HRQOL outcomes, one profile (10%) displayed average mental health. All demographic and clinical factors contributed significantly to the model, including risk factors (arthritis types, work status) and protective factors (more emotional support, starting exercise).

CONCLUSION: We identified profiles with consistently impacted HRQOL in arthritis, though one displayed average mental health functioning despite poor physical functioning. These results highlight the value of considering the patient’s HRQOL experience alongside treatment options, and the potentially positive impact of non-pharmacological interventions.

PMID:39565554 | DOI:10.1007/s11136-024-03831-9

Qual Life Res. 2024 Nov 20. doi: 10.1007/s11136-024-03834-6. Online ahead of print.

ABSTRACT

PURPOSE: Assessing socioeconomic status (SES), mental health, and health-related quality of life (HRQoL) in young children is crucial for making informed health care decisions and identifying areas of intervention. The present study aimed to investigate potential associations between SES, mental health, and HRQoL in 5-7-year-old children.

METHOD: The present study included mother-reported health assessments for 621 children aged 5-7 years in Grade 1 collected between 2019 and 2023 as part of the Starting Right™ project. Online questionnaires were used to support public health nurses in assessing children’s health status. HRQoL (KIDSCREEN-27, 5 subscales) and mental health [Strength and Difficulties Questionnaire (SDQ), 4 subscales] were assessed. Sociodemographic characteristics, sex, maternal education, and income were obtained from Statistics Norway. The data were analyzed using multiple robust regression.

RESULTS: Mother-reported mean scores for the KIDSCREEN-27 were within the normal range compared with European norms (8-11 years). However, for each KIDSCREEN-27 dimension, there were individuals whose mothers reported scores that were substantially lower than average. Having mental health problems, defined as being in the 80th and 90th percentiles of the SDQ Total problem score, was associated with 2.1-10.7-point lower KIDSCREEN-27 scores (p < 0.001-0.021), which was most noticeable in the KIDSCREEN-27 school environment subscale. Weak but significant positive associations were found between SES and HRQoL.

CONCLUSION: Our results provide important insights into the associations between SES, mental health, and HRQoL in young children. Given the strong association between mental health problems and HRQoL in Grade 1 children, the assessment of both is essential, so that early interventions, an improved caring environment, and nurturing support can be initiated.

PMID:39565553 | DOI:10.1007/s11136-024-03834-6

Qual Life Res. 2024 Nov 20. doi: 10.1007/s11136-024-03832-8. Online ahead of print.

ABSTRACT

PURPOSE: Social factors are associated with mental health and wellbeing. However, few studies have examined genetic and environmental influences on social factors themselves, limiting current understanding of influences on aspects of the social environment. Most studies which have identified links between social factors and mental health are also limited by the possible influence of unmeasured genetic and environmental confounding. In this study, we investigated the genetic and environmental underpinnings of multiple social factors (relationship satisfaction, loneliness, attachment, trust, relationship disruptions), and their associations with life satisfaction measured concurrently and six years later, after accounting for shared genetic and environmental confounding.

METHODS: Data from a population-based sample of adult twins (N = 1987) and two measurement timepoints were used for the primary analyses. We used multivariate Cholesky models to estimate genetic and environmental influences across five social factors. Subsequently, we conducted co-twin control analyses to examine associations between social factors and wellbeing after controlling for shared genetic and environmental confounding.

RESULTS: Heritability estimates for the social factors ranged from 24 to 42%. Genetic correlations across social factors were substantial, indicative of considerable genetic overlap. Associations between wellbeing and relationship satisfaction, loneliness, anxious and avoidant attachment, trust, and disruptions in relationships in the past year were attenuated in co-twin control analyses but remained statistically significant. Relationship satisfaction, loneliness, and attachment avoidance were also associated with wellbeing measured six years later in estimates which controlled for shared genetic and environmental confounding.

CONCLUSION: Our findings provide evidence that multiple social factors are associated with wellbeing after accounting for potential confounding by shared genetic and/or environmental factors. These findings highlight the importance of multiple aspects of the social environment for wellbeing in older adulthood. Future studies should examine the directionality in associations between social factors and mental health and assess these relationships beyond older adulthood.

PMID:39565552 | DOI:10.1007/s11136-024-03832-8

Clin Transl Oncol. 2024 Nov 20. doi: 10.1007/s12094-024-03787-9. Online ahead of print.

ABSTRACT

PURPOSE: This study aimed to analyze the three-dimensional enhanced computed tomography (3D-EnCT) and ultrasound imaging features of recurrent parathyroid carcinoma lesions and develop a prediction model based on these features.

METHODS: The clinical data of 34 patients (48 cases) with recurrent parathyroid carcinoma who underwent surgical treatment at Beijing Chaoyang Hospital’s Thyroid and Neck Surgery Department between January 2017 and April 2024 were retrospectively analyzed. A total of 103 suspicious lesions were identified through a combination of preoperative 3D-EnCT and ultrasound examinations. Patients admitted prior to 1 January 2023 were included in the training set, and those admitted after 1 January 2023 were included in the validation set. In the training set, lesions were categorized as positive or negative based on pathological analysis. Statistically significant imaging features were identified via intergroup comparisons. An imaging prediction model was developed based on the 3D-EnCT and ultrasound features, and the predictive performance of the model was evaluated via receiver operating characteristic curves in the validation set.

RESULTS: Arterial- and venous-phase CT values, lesion boundaries, and blood flow signals were associated with pathological positivity. The 3D-EnCT prediction model based on these features achieved areas under the curve (AUCs) of 0.9 and 0.714 in the training and validation sets, respectively, whereas the ultrasound prediction model achieved AUCs of 0.601 and 0.621, respectively. The 3D-EnCT model demonstrated superior predictive performance.

CONCLUSION: The 3D-EnCT prediction model demonstrated superior predictive performance for recurrent parathyroid carcinoma lesions.

PMID:39565549 | DOI:10.1007/s12094-024-03787-9