Group Members Research Articles

Grouping Nationalities Based on Students’ Estimation of Stereotype Contents in Switzerland

AbstractSocial stereotypes influence people’s perceptions of nationalities. To categorize the stereotypes about existing nationalities in Switzerland, the stereotype content model can be used. People with nationalities that are associated with low warmth and competence are at risk of being perceived as outgroup members and of being discriminated against, whereas people with nationalities that are rated as high in warmth and competence are more likely to be perceived as ingroup members and are therefore better accepted. Warmth is negatively associated with competition while competence is positively associated with status. Students (N = 101) from various universities in the German-speaking part of Switzerland rated 70 nationalities along the dimensions of warmth, competence, competition, and status. The cluster analyses revealed four groups of nationalities along the dimensions warmth and competence. Levels in status and competition differed between those four clusters. In line with prior research, a negative relationship was found between competition and warmth and a positive relationship between status and competence. These findings allow to understand social stereotypes of nationalities based on empirical evidence. More importantly, the clusters can be used in future studies to compare groups of people with different nationalities who have specific stereotyping experiences.

Co-developmental trajectories of suicidal ideation and non-suicidal self-injury among Chinese adolescents: Transdiagnostic predictors and association with suicide attempts.

Adolescent suicidal ideation (SI) and non-suicidal self-injury (NSSI) are crucial public health issues, yet their co-developmental trajectories during early adolescence and their associations with predictors and outcomes are unclear. This study aimed to (a) identify heterogeneous co-developmental trajectories of SI and NSSI, (b) explore associations between transdiagnostic predictors and trajectories, and (c) assess suicide attempt risk across trajectories. Four hundred fifty-three adolescents (Mage = 12.35 years, 48.3% boys) completed surveys at 6-month intervals across 2 years. At Time 1 (Nov 2020), participants completed surveys encompassing SI, and NSSI, along with family, peer, and individual predictors. Subsequent surveys (Times 2-4) measured SI and NSSI, with suicide attempts queried at Time 4. Parallel process latent class growth models revealed three co-developmental groups (i.e., Stable low NSSI and SI; Moderate-NSSI and high-SI, parallel decreasing; High-NSSI and moderate-SI, parallel increasing). Multivariate logistic regression indicated that group membership was predicted by parental rejection, parental warmth, bullying victimization, depressive and anxiety symptoms, thwarted belongingness, and perceived burdensomeness. Adolescents in the "High-NSSI and moderate-SI, parallel increasing" group reported the highest suicide attempt frequency. These findings underscore subgroup distinctions and transdiagnostic predictors in comprehending SI and NSSI progression, emphasizing the necessity of dynamic monitoring and tailored interventions for distinct subgroup characteristics.

Pathogen Avoidance and Outgroup Avoidance During the First Wave of the COVID‐19 Pandemic

AbstractBehavioral immune system (BIS) theory explains that humans possess an adaptive psychological mechanism that helps them stay away from potential sources of pathogens. The theory claims that potential sources of pathogens also include outgroups, such as racial and ethnic minorities, because outgroup members potentially carry infectious diseases to which ingroup members have not developed immunity. In order to examine this controversial claim, the current study investigated how outgroup avoidance was associated with other types of pathogen avoidance during the COVID‐19 pandemic. During the first wave of the COVID‐19 pandemic, participants from the United States (N = 386) responded to questions pertaining to pathogen threat, pathogen avoidance, and outgroup avoidance. The data were statistically analyzed to identify significant associations between those variables. The results indicated that outgroup avoidance was positively associated with avoidance of personal pathogen cues (i.e., social distancing) but no other types of pathogen cues (i.e., wearing a mask and washing hands). This result aligns with the recent theoretical argument that the outgroup avoidance activated by the BIS (e.g., xenophobia) is a byproduct of avoiding infected ingroup rather than outgroup individuals.

A logarithmic-sized accountable ring signature scheme in the standard model

Ring signature and group signature are two major cryptographic primitives providing users anonymity and authentication simultaneously. While both primitives enable any user to sign messages as a member of a set of users, the feature of ring signature is that a signer can choose a group in an ad-hoc manner, which is called a ring, by itself. Conversely, in group signature, a group membership is managed by some trusted third party, which is called a group manager, and an (appropriate) accountability is provided for the group manager to identify illegal anonymous signers. Accountable ring signature (ARS) is a cryptographic primitive combining the features of ring signature and group signature. ARS allows signers to choose their groups (rings) in an ad-hoc manner, and at the same time, maintain accountability by forcing them to select a designated opener who can identify them.In this paper, we propose the first ARS scheme with O(log⁡n) signature size in the standard model (without depending on the random oracle methodology), where n is the size of a ring. More precisely, we propose a new generic construction of ARS based on (standard) signature, (standard) public key encryption, non-interactive zero-knowledge proof system, somewhere perfectly binding hash function, and public key encryption with non-interactive opening. All building blocks for our ARS scheme can be obtained under the decisional linear (DLIN) assumption over bilinear groups.

Targeting Peroxisome Proliferator-Activated Receptor-β/δ, Reactive Oxygen Species and Redox Signaling with Phytocompounds for Cancer Therapy.

Significance: Peroxisome proliferator-activated receptors (PPARs) have a moderately preserved amino-terminal domain, an extremely preserved DNA-binding domain, an integral hinge region, and a distinct ligand-binding domain that are frequently encountered with the other nuclear receptors. PPAR-β/δ is among the three nuclear receptor superfamily members in the PPAR group. Recent Advances: Emerging studies provide an insight on natural compounds that have gained increasing attention as potential anticancer agents due to their ability to target multiple pathways involved in cancer development and progression. Critical Issues: Modulation of PPAR-β/δ activity has been suggested as a potential therapeutic strategy for cancer management. This review focuses on the ability of bioactive phytocompounds to impact reactive oxygen species (ROS) and redox signaling by targeting PPAR-β/δ for cancer therapy. The rise of ROS in cancer cells may play an important part in the initiation and progression of cancer. However, excessive levels of ROS stress can also be toxic to the cells and cancer cells with increased oxidative stress are likely to be more vulnerable to damage by further ROS insults induced by exogenous agents, such as phytocompounds and therapeutic agents. Therefore, redox modulation is a way to selectively kill cancer cells without causing significant toxicity to normal cells. However, use of antioxidants together with cancer drugs may risk the effect of treatment as both act through opposite mechanisms. Future Directions: It is advisable to employ more thorough and detailed methodologies to undertake mechanistic explorations of numerous phytocompounds. Moreover, conducting additional clinical studies is recommended to establish optimal dosages, efficacy, and the impact of different phytochemicals on PPAR-β/δ.

Ticking Two Boxes, Fighting Two Battles: Intersectional Experiences of Ethnic Minority Women Councillors in UK Local Government

Abstract When the analytical lens of intersectionality was first applied to descriptive representation, it documented the increased level of disadvantage for those belonging to more than one underrepresented group. Although ethnic minority women have been slow to benefit from drives to boost ethnic minority or women’s representation, increasingly, political parties seeking to diversify see them as “ticking two boxes,” resulting in a new positive story of relative representational success in many countries and legislatures. However, we argue that the two narratives coexist: intersectional group membership mars the experience of ethnic minority women politicians despite their increased electoral success. Conceptualizing intersectional disadvantage beyond examining differential outcomes, we focus instead on how the mechanisms leading to those outcomes are experienced by ethnic minority women local councillors, from their selection to their working conditions and extra representative burdens. Using 85 interviews with ethnic minority women and men UK local councillors, we demonstrate how gender and racial inequalities leave ethnic minority women fighting two (or more) battles.

Altruism in Facility Location Problems

We study the facility location problems (FLPs) with altruistic agents who act to benefit others in their affiliated groups. Our aim is to design mechanisms that elicit true locations from the agents in different overlapping groups and place a facility to serve agents to approximately optimize a given objective based on agents' costs to the facility. Existing studies of FLPs consider myopic agents who aim to minimize their own costs to the facility. We mainly consider altruistic agents with well-motivated group costs that are defined over costs incurred by all agents in their groups. Accordingly, we define Pareto strategyproofness to account for altruistic agents and their multiple group memberships with incomparable group costs. We consider mechanisms satisfying this strategyproofness under various combinations of the planner's objectives and agents' group costs. For each of these settings, we provide upper and lower bounds of approximation ratios of the mechanisms satisfying Pareto strategyproofness.

Distributional impact of climate-smart villages on access to savings and credit and adoption of improved climate-smart agricultural practices in the Nyando Basin, Kenya

Adoption of improved livestock breeds requires, as with other climate-smart agricultural (CSA) practices, upfront investments, which might be a significant barrier for smallholders. For this reason, the climate-smart village (CSV) approach not only includes CSA interventions, but also interventions to improve access to savings and credit among smallholders by means of a community-based approach. In this paper we study smallholders in CSVs in Kenya who were encouraged, among others, to adopt improved livestock breeds for crossbreeding with indigenous breeds to improve their resilience to climate change and variability. The farmers were also encouraged to become part of savings and credit groups to improve smallholder access to finance. The objective of this paper is thus to determine the (distributional) impact of CSVs on access to savings and credit and the adoption of improved CSA practices. Due to the as good as random selection of CSVs, we are able to estimate the treatment effects on the treated for the smallholders who decided to participate in the CSA intervention by means of a linear probability model. The analysis is based on a balanced panel of 118 farm households interviewed in 2017, 2019, and 2020. The main findings of this study are that the CSV intervention increased the adoption of improved livestock breeds. It also stimulated the membership of savings and credit groups which in turn stimulated the adoption of improved livestock breeds. These findings point to the importance of community-based savings and loan initiatives to mobilize finance among farmers enabling them to invest in CSA practices. Also, the introduction of improved breeds in CSVs has benefited especially the larger livestock owners. However, the availability of credit is found to have mitigated the concentration of improved livestock ownership since the diffusion of improved livestock in CSVs was somewhat more equitable than the (spontaneous) spill-over diffusion in the non-CSVs (reducing the Gini by 0.04).

Abstract 2255: Social support with physical and psychosocial quality of life in individuals with prostate cancer in the Health Professionals Follow-up Study (HPFS)

Abstract Introduction: Social support is associated with improved cancer survivorship, but literature on its association with prostate cancer specific physical and psychosocial quality of life (QoL) is lacking. We investigated the associations of social support with physical and psychosocial QoL in individuals with prostate cancer in HPFS. Methods: We included 1,692 men (ages 61-95 years, mean: 71 years) diagnosed with non-metastatic prostate cancer between 2008 and 2016. Social support was measured by the Berkman-Syme Social Network Index (SNI) (a composite measure of marital status, sociability, membership in religious groups or other community organizations: socially isolated, moderately isolated, moderately integrated, socially integrated) and marital status (married, not married). Physical (measured by EPIC-CP: bowel function, urinary incontinence, urinary irritation/obstruction, sexual function, vitality/hormonal function) and psychosocial (memory function and wellbeing) QoL were measured through biennial questionnaires. We fit generalized linear and ordinal mixed effect models for the associations of SNI and marital status with physical and psychosocial QoL, adjusting for age, race, employment status, body mass index, comorbidities, smoking history, and clinical factors. We conducted stratified analyses by baseline age (<70, ≥70), baseline comorbidities (yes, no), primary treatment (active surveillance, radical prostatectomy, radiation), and D’Amico Risk Classification at diagnosis (low, intermediate, high risk). Results: Among those with baseline SNI (N=1,586), 740 were socially integrated, 309 were moderately integrated, 437 were moderately isolated, and 100 were isolated. Among those with baseline marital status (N=1,663), 89% were married. Physical QoL did not differ significantly by SNI. Married individuals (compared to not married) experienced less urinary incontinence (β -0.25, 95% confidence interval [CI]: -0.55, 0.05) and urinary irritation/obstruction (β -0.26, 95% CI: -0.52, 0.00). Those who were socially integrated (compared to isolated) reported better memory function (Odds ratio [OR] 1.47, 95% CI 1.06, 2.03) and wellbeing (OR 1.74, 95% CI 1.31, 2.31). The positive association between social support and QoL was stronger among those with baseline aged <70 years (for vitality/hormonal functioning and memory function), those without comorbidities at baseline (for memory function), those with radiation as primary treatment (for urinary incontinence, vitality/hormonal functioning, memory function, and wellbeing), and those with high risk (for memory function and wellbeing). Conclusion: Prostate cancer survivors with more social support experienced better quality of life, including less urinary incontinence and urinary irritation/obstruction, and better memory function and wellbeing. Citation Format: Naiyu Chen, Colleen B. McGrath, Barbra A. Dickerman, Rachel C. Nethery, Lorelei A. Mucci. Social support with physical and psychosocial quality of life in individuals with prostate cancer in the Health Professionals Follow-up Study (HPFS) [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2024; Part 1 (Regular Abstracts); 2024 Apr 5-10; San Diego, CA. Philadelphia (PA): AACR; Cancer Res 2024;84(6_Suppl):Abstract nr 2255.

Evaluating compliance with the best practice guidelines for wrong-level surgery prevention in high-risk pediatric spine surgery.

In 2018, Best Practice Guidelines (BPGs) were published for preventing wrong-level surgery in pediatric spinal deformity, but successful implementation has not been established. The purpose of this study was to evaluate BPG compliance 5years after publication. We hypothesized higher compliance among BPG authors and among surgeons with more experience, higher caseload, and awareness of the BPGs. We queried North American and European surgeons, authors and nonauthors, and members of pediatric spinal study groups on adherence to BPGs using an anonymous survey consisting of 18 Likert scale questions. Respondents provided years in practice, yearly caseload, and guideline awareness. Mean compliance scores (MCS) were developed by correlating Likert responses with MCS scores ("None of the time" = no compliance = MCS 0, "Sometimes" = weak to moderate = MCS 1, "Most of the time" = high = MCS 2, and "All the time" = perfect = MCS 3). Of the 134 respondents, 81.5% reported high or perfect compliance. Average MCS for all guidelines was 2.4 ± 0.4. North American and European surgeons showed no compliance differences (2.4 vs. 2.3, p = 0.07). Authors and nonauthors showed significantly different compliance scores (2.8 vs 2.4, p < 0.001), as did surgeons with and without knowledge of the BPGs (2.5 vs 2.2, p < 0.001). BPG awareness and compliance showed a moderate positive correlation (r = 0.48, p < 0.001), with non-significant associations between compliance and both years in practice (r = 0.41, p = 0.64) and yearly caseload (r = 0.02, p = 0.87). Surgeons reported high or perfect compliance 81.5% of the time with BPGs for preventing wrong-level surgery. Authorship and BPG awareness showed increased compliance. Location, study group membership, years in practice, and yearly caseload did not affect compliance. Level V-expert opinion.

Both identity and non-identity face perception tasks predict developmental prosopagnosia and face recognition ability

Developmental prosopagnosia (DP) is characterised by deficits in face identification. However, there is debate about whether these deficits are primarily perceptual, and whether they extend to other face processing tasks (e.g., identifying emotion, age, and gender; detecting faces in scenes). In this study, 30 participants with DP and 75 controls completed a battery of eight tasks assessing four domains of face perception (identity; emotion; age and gender; face detection). The DP group performed worse than the control group on both identity perception tasks, and one task from each other domain. Both identity perception tests uniquely predicted DP/control group membership, and performance on two measures of face memory. These findings suggest that deficits in DP may arise from issues with face perception. Some non-identity tasks also predicted DP/control group membership and face memory, even when face identity perception was accounted for. Gender perception and speed of face detection consistently predicted unique variance in group membership and face memory; several other tasks were only associated with some measures of face recognition ability. These findings indicate that face perception deficits in DP may extend beyond identity perception. However, the associations between tasks may also reflect subtle aspects of task demands or stimuli.

Community groups as an enabler for access to livelihood capitals, deprivation of which contributes to multidimensional poverty in rural Uganda

Using the 2016/2017 and 2019/2020 Uganda National Household Survey (UNHS), this study analyses the effect of saving and credit community groups, both cooperatives and associations, on multidimensional poverty. Access to livelihood capitals reduces poverty. Poverty being a rural phenomenon in Uganda, this study assesses whether households in rural Uganda with community group members have access to livelihood capitals. The study also examined the effect of non-membership in a community group on multidimensional poverty and whether being multidimensionally poor affects membership in community groups. The Alkire-Foster method is applied to calculate the Adjusted Headcount Ratio (M0), which is used in the propensity score model to establish the effect of membership in a community group on household multidimensional poverty. Analysis of how the estimated multidimensional poverty varies with the estimated propensity score is achieved using the estimated Average Treatment Effect of the Treated (ATET) obtained with four matching methods (nearest neighbour, radius, kernel, and stratification). Findings reveal that community groups enable rural dwellers to access livelihood capitals, hence enabling them to overcome their multiple deprivations and reducing their likelihood of being multidimensionally poor. Membership in community groups is robustly linked to a decreased probability of being multidimensionally poor by over 3 percentage points.

Childhood trauma and sex addiction among adult men

AbstractThis study explored the relationship between childhood trauma and sex addiction among a sample of adult men (N = 149). Thirty‐eight (25.5%) men screened positive for sex addiction, whereas 111 (74.5%) did not. Using descriptive discriminant analysis, we found that four subscales of early trauma predicted risk of sex addiction group membership to varying degrees, accounting for 22.3% of the variance explained. Sexual and emotional abuse accounted for the most variance explained in the group differences, whereas physical abuse and, to a lesser extent, general trauma also contributed to the group differences. Implications of the study findings are discussed.

Abstract P400: Trajectories of Psychological Well-Being Are Associated With High Cardiovascular Health Late in Life: Findings From the Women’s Health Initiative

Introduction: Psychological well-being (PWB) may influence cardiovascular health (CVH) through what the American Heart Association has called the “mind-heart-body connection”. However, few studies have examined longitudinal relationships between positive PWB and CVH. We estimated associations between trajectories of PWB and Life’s Essential 8 (LE8) achievement. Hypothesis: We hypothesized that women who maintained high levels of PWB over time would have higher LE8 scores later in life. Methods: We conducted group-based trajectory modelling in the Women’s Health Initiative (WHI) to identify latent trajectories of PWB among those with ≥3 measurements of purpose in life (PIL, N=29,717) and personal growth (PG, N=12,148). PIL and PG scores were calculated according to participants’ responses to the FACIT-Sp Meaning Subscale and Ryff’s Scales of PWB, collected between 2000-2021. The selection of trajectory models was informed by statistical criteria and prior literature. Late life CVH (2018-2021) was summarized by LE8, with scoring adapted based on available data: self-reported treatment for hypertension, diabetes, and hypercholesterolemia, and historical food frequency questionnaires were used. Logistic regression was performed to estimate associations between PIL and PG trajectory group membership and high CVH (LE8≥80), summarized by odds ratios (OR) and 95% confidence intervals (CI). Logistic models adjusted for baseline age, WHI study arm, race, marital status, income, and education in those with complete data (PIL N=28,033; PG N=11,495). Results: On average, PIL trajectories spanned 17 years (age 66-83) and three latent groups were identified: high/decreasing (n=12,073; 47.4%), moderate/decreasing (n=12,096; 44.1%), and low/stable (n=2,548; 8.6%). Compared to those in the low/stable group, women in the moderate/decreasing and high/decreasing PIL groups had significantly higher odds of having high CVH (OR 1.47 [1.35, 1.61] and OR 2.09 [1.92, 2.28], respectively). These associations were robust to adjustment for demographics and social determinants of health: moderate/decreasing (aOR 1.40 [1.27, 1.53]), high/decreasing (aOR 1.88 [1.71, 2.07]). PG trajectories spanned 9 years (age 74-83) and high/stable (n=3,832, 31.5%), moderate/stable (n=5,692, 46.9%), and low/stable (n=2,624, 21.6%) latent groups were identified. Membership in moderate/stable (OR 1.53 [1.40, 1.69] and high/stable (OR 1.95 [1.75, 2.16]) PG trajectory groups was also significantly associated with odds of having high CVH. These associations remained significant after adjustment (moderate/stable aOR 1.40 [1.27, 1.55]; high/stable aOR 1.64 [1.46, 1.84]). Conclusions: Maintaining high levels of PIL and PG may contribute to better CVH late in life. Further research is needed to investigate how strategies to improve PWB may be integrated within cardiovascular care among older adults.

Isolation, Identification, and Characterization of Bacillus cereus Group Bacteria Isolated from the Dairy Farm Environment and Raw Milk in Tunisia.

Members of the Bacillus cereus group are well-known opportunistic foodborne pathogens. In this study, the prevalence, hemolytic activity, antimicrobial resistance profile, virulence factor genes, genetic diversity by enterobacterial repetitive intergenic consensus (ERIC)-polymerase chain reaction (PCR) genotyping, and adhesion potential were investigated in isolates from a Tunisian dairy farm environment and raw milk. A total of 200 samples, including bedding, feces, feed, liquid manure, and raw bovine milk, were examined. Based on PCR test targeting sspE gene, 59 isolates were detected. The prevalence of B. cereus group isolates in bedding, feces, liquid manure, feed, and raw milk was 48%, 37.8%, 20%, 17.1%, and 12.5%, respectively. Out of the tested strains, 81.4% showed β-hemolytic on blood agar plates. An antimicrobial resistance test against 11 antibiotics showed that more than 50% of the isolates were resistant to ampicillin and novobiocin, while a high sensitivity to other antibiotics tested was observed in most isolates. The distribution of enterotoxigenic genes showed that 8.5% and 67.8% of isolates carried hblABCD and nheABC, respectively. In addition, the detection rate of cytotoxin K (cytk), enterotoxin T (bceT), and ces genes was 72.9%, 64.4%, and 5.1%, respectively. ERIC-PCR fingerprinting genotype analysis allowed discriminating 40 different profiles. The adhesion potential of B. cereus group on stainless steel showed that all isolates were able to adhere at various levels, from 1.5 ± 0.3 to 5.1 ± 0.1 log colony-forming unit (CFU)/cm2 for vegetative cells and from 2.6 ± 0.4 to 5.7 ± 0.3 log CFU/cm2 for spores. An important finding of the study is useful for updating the knowledge of the contamination status of B. cereus group in Tunisia, at the dairy farm level.

Reward, relief, and habit drinking profiles in treatment seeking individuals with an AUD.

This study aimed to compare reward, relief, and habit treatment-seeking individuals on recent drinking, alcohol use disorder (AUD) phenomenology, and mood. The second aim of the study was to evaluate the predictive validity of reward, relief, and habit profiles. Treatment-seeking individuals with an AUD (n = 169) were recruited to participate in a medication trial for AUD (NCT03594435). Reward, relief, and habit drinking groups were assessed using the UCLA Reward Relief Habit Drinking Scale. Group differences at baseline were evaluated using univariate analyses of variance. A subset of participants were enrolled in a 12-week, double-blind, placebo-controlled medication trial (n = 102), and provided longitudinal drinking and phenomenology data. The predictive validity of group membership was assessed using linear regression analyses. At baseline, individuals who drink primarily for relief had higher craving and negative mood than those who drink for reward and habit. Prospectively, membership in the relief drinking group predicted greater alcohol use, greater heavy drinking, and fewer days abstinent compared to those in the reward drinking group. Membership in the relief drinking group also predicted greater alcohol craving, more alcohol-related consequences, and more anxiety symptoms over 12 weeks compared to those in the reward drinking group. This study provides support for reward and relief drinking motive profiles in treatment-seeking individuals with an AUD. Membership in the relief drinking motive group was predictive of poorer drinking outcomes and more negative symptomology over 12 weeks, indicating that individuals who drink for relief may be a particularly vulnerable sub-population of individuals with AUD.

Exploring the Interplay Between Equity Groups, Mental Health and Perceived Employability Amongst Students at a Public Australian University

AbstractThis article explores the interplay between perceived employability (PE), mental health, and equity group membership amongst students at a large public urban university in Australia. The article reports from a study conducted between 2017 and 2022, during which students self-assessed their PE. Differences in PE by equity group membership were assessed using responses to structured fields in the questionnaire (n = 24,329). Custom measures were constructed using student responses to open-ended fields to proxy student wellbeing based on sentiment analysis and mention of mental health or synonymous terms (n = 12,819). Analyses included two-way tests of differences between groups and multivariate analyses considering the effect of equity group membership and mental health concerns on employability beliefs. Results indicate that students with a disability, with English as a second language, or with wellbeing concerns report lower perceived employability. Of all the PE dimensions, academic self-efficacy is most consistently affected by equity group membership and wellbeing concerns. Further, wellbeing concerns are more prevalent for students with disabilities. The findings strengthen support for policy and institutional initiatives focusing on student wellbeing in general but also specifically for equity groups that are already associated with poorer employability beliefs. In particular, students with disabilities appear to have poorer self-esteem and academic self-efficacy and are more likely to have mental health concerns.

Food Calorie Consumption and Vulnerability Status of the Rice Farmers in Ekiti State, Nigeria: Perspective for Commercialized Farming

The research investigated the calorie consumption and vulnerability status among rice farmers in Ekiti State, Nigeria. Employing a multi-stage sampling technique, 420 respondents were selected, and data were collected through a well designed questionnaire. Analysis involved descriptive statistics, a vulnerability index, and an ordinary least squares regression model. Findings indicated that vulnerable rice farming households typically exhibit larger sizes with fewer working members, often headed by unmarried females. Additionally, factors such as adult equivalence, the head of the household's years of formal education, land ownership, membership in agricultural production groups, engagement in agricultural commercialization, contact with extension agents, and encounters with Fulani herdsmen significantly influenced households' food calorie consumption. Furthermore, all variables considered in the ordinary least squares regression, regarding vulnerability to food insecurity, exhibited a significant relationship with households' vulnerability to food insecurity. In summary, the study provides valuable insights into the demographic and socio-economic factors affecting calorie consumption and vulnerability among rice farmers, offering a foundation for targeted interventions and policy considerations.

Behavioural Factors Influencing the Intention to Adopt Sheep Scab Control Measures in Northern Ireland.

Sheep scab, caused by infestation with the ectoparasitic mite Psoroptes ovis, is an endemic disease in the Northern Ireland (NI) sheep flock and constitutes significant economic and welfare burdens for the NI farming industry. Despite its endemic nature, historically, little research has been undertaken to support the control of the disease in NI. This study offers the first attempt to analyse the psychological and behavioural factors influencing farmers' intentions to implement effective sheep scab control measures in NI. To achieve our objective, quantitative data from a sample of 126 sheep farmers were statistically analysed using an extended theory of planned behaviour approach in an ordered logistic regression modelling framework. Our analyses showed that sheep scab remains an issue of concern in Northern Ireland. The attitudes of the farmers, as well as perceived behavioural control, emotional effect, membership of Business Development Groups (BDGs), and higher education qualifications, were found to be statistically significant factors influencing farmers' intentions to adopt sheep scab control measures. This study provides a solid foundation for how to promote behavioural changes among sheep farmers to improve their ability to implement effective disease control measures, helping to tackle this challenging disease in a more sustainable way in the future.

Disparities in Medical School Clerkship Grades Associated with Sex, Race, and Ethnicity: A Person-Centered Approach.

To determine whether students' self-reported race/ethnicity and sex were associated with grades earned in 7 core clerkships. A person-centered approach was used to group students based on observed clerkship grade patterns. Predictors of group membership and predictive bias by race/ethnicity and sex were investigated. Using data from 6 medical student cohorts at Johns Hopkins University School of Medicine (JHUSOM), latent class analysis was used to classify students based on clerkship grades. Multinomial logistic regression was employed to investigate if preclerkship measures and student demographic characteristics predicted clerkship performance-level groups. Marginal effects for United States Medical Licensing Exam (USMLE) Step 1 scores were obtained to assess the predictive validity of the test on group membership by race/ethnicity and sex. Predictive bias was examined by comparing multinomial logistic regression prediction errors across racial/ethnic groups. Three clerkship performance-level groups emerged from the data: low, middle, and high. Significant predictors of group membership were race/ethnicity, sex, and USMLE Step 1 scores. Black or African American students were more likely (odds ratio [OR] = 4.26) to be low performers than White students. Black or African American (OR = 0.08) and Asian students (OR = 0.41) were less likely to be high performers than White students. Female students (OR = 2.51) were more likely to be high performers than male students. Patterns of prediction errors observed across racial/ethnic groups showed predictive bias when using USMLE Step 1 scores to predict clerkship performance-level groups. Disparities in clerkship grades associated with race/ethnicity were found among JHUSOM students, which persisted after controlling for USMLE Step 1 scores, sex, and other preclerkship performance measures. Differential predictive validity of USMLE Step 1 exam scores and systematic error predictions by race/ethnicity show predictive bias when using USMLE Step 1 scores to predict clerkship performance across racial/ethnic groups.