Cathleen Odar Stough

Vignette methodologies for studying clinicians’ decision-making: Validity, utility, and application in ICD-11 field studies ☆

Vignette-based methodologies are frequently used to examine judgments and decision-making processes, including clinical judgments made by health professionals. Concerns are sometimes raised that vignettes do not accurately reflect “real world” phenomena, and that this affects the validity of results and conclusions of these studies. This article provides an overview of the defining features, design variations, strengths, and weaknesses of vignette studies as a way of examining how health professionals form clinical judgments (e.g., assigning diagnoses, selecting treatments). As a “hybrid” of traditional survey and experimental methods, vignette studies can offer aspects of both the high internal validity of experiments and the high external validity of survey research in order to disentangle multiple predictors of clinician behavior. When vignette studies are well designed to test specific questions about judgments and decision-making, they can be highly generalizable to “real life” behavior, while overcoming the ethical, practical, and scientific limitations associated with alternative methods (e.g., observation, self-report, standardized patients, archival analysis). We conclude with methodological recommendations and a description of how vignette methodologies are being used to investigate clinicians’ diagnostic decisions in case-controlled field studies for the ICD-11 classification of mental and behavioural disorders, and how these studies illustrate the preceding concepts and recommendations

Outcomes of a weight management clinic for children with special needs.

Objective: Rates of obesity are elevated among children with special needs (e.g., autism spectrum disorder, Down syndrome, or developmental disabilities). The objective of this study was to evaluate the effectiveness of a multidisciplinary tailored intervention to treat obesity among youth with special needs. Method: Seventy-six children aged 2 to 19 years participated in a multidisciplinary weight management clinic adapted for children with special needs. A description of the patients presenting for specialized clinical services is provided, and the impact of the intervention on child body mass index (BMI) and food variety was examined for a subset (n = 30) of children. Descriptive statistics of the patient population at baseline were calculated and a series of t tests, correlations, and analysis of variance models examined change in BMI z-scores (BMIz) and diet variety. Factors related to treatment outcomes were also explored. Results: BMIz decreased significantly by the 6-month follow-up (M = 2.43 to M = 2.36, p < .01). There were significant increases in the variety of fruits, vegetables, and grains that children ate (t(16) = 3.18, p < .01; t(16) = 2.63, p = .02; t(16) = 2.37, p = .03, respectively). Conclusion: A multidisciplinary clinic-based intervention was effective in reducing BMIz over a 6-month period and increasing the variety of foods that children were eating. These results have implications for providing tailored weight management interventions for youth with obesity and special needs.

Risk for household safety hazards: Socioeconomic and sociodemographic factors.

INTRODUCTION Many unintentional injuries to young children occur in the home. The current study examines the relation between family socioeconomic and sociodemographic factors and risk factors for home injury. METHODS Presence of household hazards was examined in 80 families with toddler-aged children. Parental ability to identify household hazards in pictures was also assessed. ANOVAs and Pearson product-moment correlations examined the relationship between presence of household hazards, knowledge to identify hazards, and factors of yearly family income, parental age, parental education, parental marital status, child ethnicity, and the number of children living in the home. RESULTS A greater number of hazards were found in the homes of both the lowest and highest income families, but poorer knowledge to identify household hazards was found only among parents of the lowest income families and younger parents. Across family socioeconomic status, parent knowledge of hazards was related to observed household hazards. CONCLUSIONS The relationship between family income and risk for injury is complex, and children of both lower and higher SES families may be at risk for injury. PRACTICAL APPLICATIONS While historically particular focus has been placed on risk for injury among children in low income families, injury prevention efforts should target reducing presence of household hazards in both high and low SES families.

Measurement of Mealtime Behaviors in Rural Overweight Children: An Exploratory Factor Analysis of the Behavioral Pediatrics Feeding Assessment Scale

OBJECTIVE The current study presents results of an exploratory factor analysis (EFA) of the Behavioral Pediatric Feeding Assessment Scale (BPFAS) in a sample of rural children with overweight and obesity. Relationships between mealtime behavior and health outcomes are also explored. METHODS EFA was used to assess the fit of the BPFAS in a group of 160 treatment-seeking children (Mage = 9.11, SD = 1.77) living in rural Midwest communities. Correlations were also computed between factor scores and select health variables (child body mass index z-score and diet variables). RESULTS The EFA identified a 5-factor solution as the best fitting model (Tucker-Lewis Index = .96, root mean square error of approximation = .05), although several items (i.e., 7 of 25) did not load on any factor. 2 factors were correlated with health variables of interest. CONCLUSION Study results suggest that certain items on the BPFAS may not be appropriate for use with rural children with pediatric overweight or obesity. Implications for future research and practice are discussed.

Mealtime behaviors associated with consumption of unfamiliar foods by young children with autism spectrum disorder

Parent and child mealtime behaviors associated with consumption of unfamiliar foods by children with ASD were examined. Families of 38 children aged 2 through 8 years old and diagnosed with ASD videotaped a typical home mealtime during which parents presented the child with an unfamiliar food and mealtime behaviors were subsequently coded through an observational coding system. The child taking sips of their drink was the only behavior related to whether the child took a bite of the unfamiliar food throughout the course of the meal. Parent direct commands and parents feeding the child were related to greater frequency of subsequent bites in a close temporal window, while child play, the child being away from the table, and child talk about things other than food related to lower frequencies of subsequent bites. Clinical interventions for food selectivity in children with ASD might provide parents education on effective mealtime parenting strategies and decreasing inappropriate child mealtime behaviors.

Learning about Activity and Understanding Nutrition for Child Health (LAUNCH): Rationale, design, and implementation of a randomized clinical trial of a family-based pediatric weight management program for preschoolers

Obesity affects nearly 2 million preschool age children in the United States and is not abating. However, research on interventions for already obese preschoolers is limited. To address this significant gap in the literature, we developed an intervention targeting obesity reduction in 2 to 5year olds, Learning about Activity and Understanding Nutrition for Child Health (LAUNCH). This paper describes the rationale, design, participant enrollment, and implementation of a 3-arm randomized, parallel-group clinical trial comparing LAUNCH to a motivational-interviewing intervention (MI) and standard care (STC), respectively. Whereas LAUNCH was designed as a skills based intervention, MI focused on addressing the guardians motivation to make changes in diet and activity and providing tools to do so at the guardians level of readiness to implement changes. Child body mass index z-score was the primary outcome, assessed at pretreatment, posttreatment (Month 6), and 6 and 12month follow-ups (Months 12 and 18). Mechanisms of weight change (e.g., dietary intake, physical activity) and environmental factors associated with weight (e.g., foods available in the home, caregiver diet) were also assessed. This study is unique because it is one of the few randomized controlled trials to examine a developmentally informed, clinic and home skills based behavioral family intervention for preschoolers who are already obese. Being obese during the preschool years increases the likelihood of remaining obese as an adult and is associated with serious health conditions; if this intervention is successful, it has the potential to change the health trajectories for young children with obesity.

Barriers to Recruitment in Pediatric Obesity Trials: Comparing Opt-in and Opt-out Recruitment Approaches

Objective To compare the efficacy of opt‐in versus opt‐out recruitment methods in pediatric weight management clinical trials. Methods Recruitment of preschoolers and school‐age children across two obesity randomized controlled trials (RCTs) were compared using the same opt‐in recruitment approach (parents contact researchers in response to mailings). Opt‐in and opt‐out strategies (parents send decline postcard in response to mailings if they do not want to participate) were then compared across two preschool obesity RCTs. Results Opt‐in strategies yielded a significantly lower overall recruitment rate among preschoolers compared with school‐age children. Among preschoolers, an opt‐out strategy demonstrated a significantly higher overall recruitment rate compared with an opt‐in strategy with the main advantage in the number of families initially contacted. Conclusions Opt‐out recruitment strategies may be more effective in overcoming the barriers of recruitment in the preschool age‐group because it does not rely on parent recognition of obesity.

Outcomes of a weight management program conjointly addressing parent and child health

ABSTRACT A randomized control trial of a group-based behavioral weight management program targeting parent and child health change using a diverse community sample was conducted. Children and parents were randomized to an immediate treatment or waitlist condition and completed pre- and post-intervention measures of parent Body Mass Index (BMI), child BMI z-score, child diet, and child physical activity. Families attending the treatment condition did not show greater improvements in outcomes. Child age and number of treatment sessions attended did not relate to health outcomes.

Treating Obesity in Preschoolers: A Review and Recommendations for Addressing Critical Gaps

Developing interventions targeting obesity reduction in preschoolers is an emergent area. Although intensive, multicomponent interventions seem a promising approach to preschool obesity reduction, this review identifies and discusses approaches to 3 critical gaps (poor reach to families from low-income and minority backgrounds, lack of sufficient evidence to determine the most effective and efficient treatment components and approaches to treating obesity in early childhood, and lack of consensus on how best to discern intervention effectiveness) that need to be addressed to advance the preschool obesity literature.

Confirmatory Factor Analysis of Sizing Me Up: Validation of an Obesity-Specific Health-Related Quality of Life Measure in Latino Youth

Objectives This study aims to validate an obesity-specific health-related quality of life (HRQOL) measure, Sizing Me Up (SMU), in treatment-seeking Latino youth. Pediatric obesity has been associated with reduced HRQOL; therefore, valid measures are important for use in diverse populations that may be at increased risk for obesity and related comorbidities. Methods Structural equation modeling tested the fit of the 5-subscale, 22-item SMU measure in Latino youth, 5-13 years of age, with obesity ( N = 204). Invariance testing was conducted to examine equivalence between Latino and non-Latino groups ( N = 250). Results SMU achieved acceptable fit in a Latino population [χ 2 = 428.33, df = 199, p < .001, Root Mean Squared Error of Approximation = 0.072 (0.062-0.082), Comparative Fit Index = 0.915, Tucker-Lewis Index = 0.901, Weighted Root Mean Square Residual = 1.2230]. Additionally, factor structure and factor loadings were invariant across Latino and non-Latino groups, but thresholds were not invariant. Conclusions SMU is a valid measure of obesity-specific HRQOL in treatment-seeking Latino youth with obesity.