Identification and Characterization of Families That Are Positively Deviant for Childhood Obesity in a Latino Population: A Case-Control Study

Who moves in vulnerable Caribbean neighborhoods? Positive deviance for physical activity: Findings from the Jamaica health and Lifestyle Survey 2017 (JHLS III)

Decreased physical activity (PA) has been associated with residents living in neighborhoods perceived as being disordered or having high crime levels. What is unknown are the characteristics of individuals who engage in moderate to vigorous levels of PA (MVPA) despite living in these vulnerable neighborhoods, or who may be referred to as positive deviants (PD). We examined the factors associated with PD for PA among Jamaicans. Between 2016 and 2017 the Jamaica Health and Lifestyle Survey, a cross-sectional nationally representative survey (n = 2807), was conducted on individuals aged 15 years and older. Regression analyses were performed to identify associations with PD, defined using engagement in MVPA among persons living in vulnerable neighborhoods (N = 1710). Being female (odds ratio [OR]a = 0.64 (0.48, 0.86); p = 0.003), obese while living in an urban area (ORa = 0.39; 95 % CI = 0.26, 0.59; p < 0.0001), unemployed (ORa = 0.53; 95 % CI = 0.39, 0.73; p < 0.0001), or a student (ORa = 0.62; 95 % CI = 0.39, 0.98); p = 0.041) was associated with a significantly lower likelihood of PD, while having a personal medical history of at least one chronic disease significantly increased likelihood (ORa = 1.43; 95 % CI = 1.08, 1.90; p = 0.014). Taking a PD approach may be one angle to consider in trying to determine what is working and for whom, so that this may be harnessed in policy, prevention and intervention programming to increase PA.

Identification of positive parenting practices among parents of young children living in low-income and racially, ethnically, and culturally diverse households

Using the positive deviance approach, the purpose of this study was to identify parent feeding practices that might be protective against early childhood obesity among children with lower weight status (BMI percentile ≥5th-<85th) relative to higher weight status (BMI percentile ≥85th). Qualitative interviews were conducted with 71 parents of children aged 2-5 years old (48% girls) enrolled in the Minnesota Special Supplemental Nutrition Program for Women Infants and Children (WIC). Children were identified as having lower weight status (defined as 'positive deviants') (n = 36) or 'higher weight status' (n = 35), and were African American [n = 22], Hispanic [n = 23], or Hmong [n = 26]). Parents were asked about approaches to child feeding and health- and weight-related practices. Findings indicated that relative to caregivers of children with higher weight status, parents of children identified as positive deviant were more likely to report having a consistent routine for providing meals, using a guided choices approach, serving small portions of food during mealtimes, and trusting their child hunger and satiety cues. Moreover, parents of children identified as positive deviant were more likely to promote healthful eating and physical activity engagement and implement clear rules and limits for screen time than parents of children with higher weight status. Results suggest specific parent feeding behaviors and health-related practices that may influence child weight status among children living in low-income and racialized households. The findings of this study also provide research evidence and support the tenets of the Satter Division of Responsibility in Feeding framework. Parenting practices and strategies among parents of children identified as positive deviant are expected to be feasible and should be explored and communicated in future interventions to support age- and sex-recommended weight and health-related outcomes among young children to promote health equity.

Food security and feeding behaviours in low-income, Latinx families with preschool-aged children

OBJECTIVE

To examine the association between food security and feeding practices in Latinx parents of pre-school-aged children and examine possible effect modification by parental self-efficacy.

DESIGN

Cross-sectional assessment using the US Department of Agriculture screener for food insecurity as the exposure and sub-scales of the Comprehensive Feeding Practices Questionnaire as the outcome with the General Self-Efficacy Scale as an effect modifier. Non-parametric descriptive statistics were used to compare groups based on food security status.

SETTING

Two Latinx communities with low-socioeconomic status in Texas in 2017 and in Oregon in 2018-2019.

PARTICIPANTS

Latinx parents of preschool aged children, English and Spanish speaking. Dyads were excluded if they had moderate-severe developmental disabilities, a seizure disorder with a restrictive diet or taking medications known to influence typical growth.

RESULTS

Of the 168 families in Oregon, 65 (38 %) reported food insecurity, and 10 (21 %) of the 48 families in Texas reported food insecurity. Food security was associated with greater parental monitoring practices in both the Texas and Oregon samples. We observed no differences in creating a healthy home food environment by food security status in either sample. Parental general self-efficacy showed evidence of effect modification in Oregon - only parents with lower self-efficacy showed a significant association between food security and feeding practices.

CONCLUSIONS

Latinx parents of preschool children experience high levels of food insecurity, which are associated with maladaptive parental feeding practices. Greater parental general self-efficacy moderates this association and could buffer the effects of food insecurity on children's health.

Positive deviance in health and medical research on individual level outcomes - a review of methodology

BACKGROUND

Positive deviance as a methodology is increasing in application yet there is high variability in how this approach is applied in health services research.

METHODS

We conducted a scoping review of the literature for positive deviance applied to health outcomes informed by PRISMA-ScR. We searched the literature from 1945 to 2020, including articles on positive deviance or positive outliers, and restricted to examining individual rather than organizational outcomes. We analyzed the methodology applied including the process of identifying deviants, the use of control groups, and the degree of community engagement.

RESULTS

Our initial search identified 1140 manuscripts; we included 104 papers describing 98 studies, 11 topical and one miscellaneous category. Most studies used objective measures of health or survey-based responses to identify deviants from a sub-set of the population at risk. The use of controls was less common in some topics (hospital infections), whereas controls were universally applied in other topics (malnutrition). The degree of community engagement varied widely.

CONCLUSIONS

Positive deviance would benefit from improvements in reporting and standardized approaches to defining deviance. Studies could be improved through clarified definitions of deviance/risk, explicit descriptions of community engagement, and more consistent use of controls.

Growing Healthy Together: A Randomized Clinical Trial Using Parent Mentors for Early Childhood Obesity in Low-Income, Latino Families

Background: Parent mentors are a potential community-based mechanism for delivering behavioral interventions. For communities at a higher risk of obesity and challenges with access to care, such as migrant and seasonal farm workers, this may be an effective intervention for obesity. This study examined the effect of parent mentors on weight outcomes. Methods: This randomized clinical trial assigned parents of 2- to 5 year-old children enrolled in Head Start 1:1:1 to control, a parent mentor teaching We Can!, or a parent mentor teaching an intervention derived from positive deviance methods. The parent mentor arms were designed to have weekly interactions and monthly community meetings over 6 months. The primary outcome was change in adiposity, as measured by body mass indices. Results: We randomized 188 parents, and 155 completed the 6-month visit. Most parents, 107 (58%), had less than a high school education, and 170 (90%) reported Latino ethnicity. In the intention-to-treat analysis, no difference between the groups was observed for change in percent distance from the median or BMI z-score. The median number of interactions was 14 (IQR 10-20) over 6 months for those who did engage, though 24 of 118 (20%) had no interaction. Those with no interactions in We Can! had a mean increase in change from median of 6.7 [standard deviation (SD) = 8.2]; those with higher participation experienced a 0.4 (SD = 9.2) change, p = 0.04. Conclusions: Parent mentors were not effective in changing the adiposity indices in this study overall, with some evidence of efficacy after accounting for participation. Clinicaltrials.gov registration number: NCT03330743.

Understanding children and young people's experiences pursuing weight loss maintenance using the Socio-ecological Model: A qualitative systematic literature review

Developing a broader understanding of children and young people's experiences of long-term attempts of weight management may provide insight into both enablers and barriers to successful weight loss maintenance. This review aims to explore children and young people's perceptions of long-term attempts of weight management. Six databases were searched for qualitative studies describing young participants (<25 years, previously or currently above a healthy weight) experiences of weight management for >6 months following intentional weight loss. A thematic synthesis was undertaken. Themes were interpreted using the Socio-ecological Model. Factors supporting attempts to maintain weight loss included having clear motivation for change; developing personal skills to manage the challenges of change; family support/dynamics that encourage healthy lifestyles; and health-promoting cultures in schools/workplaces, communities, and the broader living environment. Conversely, ambivalence, difficulty coping with changes, peer pressure, challenging family dynamics, limited professional support, and unhealthy living environments were barriers to maintaining behavior change. These facilitators and barriers at each level of the Socio-ecological Model informed a model of weight loss maintenance for children and young people. Supporting children, young people, and families to develop the skills to manage the individual, social, and environmental challenges that shape attempts of long-term weight management will help to support their ability to manage their weight long term.

Parent Feeding Practices in the Context of Food Insecurity

The process of feeding is complex and highly dependent on parent, child, social, and environmental factors. Given the rising rates of food insecurity and concomitant poor nutrition and health, the purpose of this article was to outline the important and complex ways in which the context of food insecurity can impact parent feeding practices. Key factors discussed here include the impact of food insecurity on: expectations for motherhood, structural constraints, stress and depression, parents’ perceptions of health and child weight, and intergenerational transmission of parent feeding practices. Future research needs are also identified and discussed.

Investigating improvements in premature death in two rural, majority-minority counties in the south

This exploratory study investigates counties in the southeast United States with mortality outcomes that were better than might be expected given their sociodemographic profiles (i.e., positive deviance). This study seeks to understand the community characteristics with the potential to moderate the negative health outcomes typically associated with social, geographic, or economic disadvantages. This article describes the process used to identify positive deviants and reports on the findings from key informant interviews in positive deviant counties to identify community factors or practices that might contribute to positive deviance in the observed outcomes. County Health Rankings and Roadmaps 2015 data and mortality trends were examined to identify positive deviant counties. The inclusion criteria were median household incomes in the lowest tertile of their state, ≥ 33% African American, and premature mortality rankings (as measured by Years of Potential Life Lost-YPLL) in the top quartile within their state. After benchmarking county rates against national figures and retaining counties with significant improvement trends, two counties emerged as positive deviants, Dooly County, Georgia and Washington County, North Carolina. Key informant interviews (n = 11) were conducted with community stakeholders in the study counties to better understand the community characteristics that could lead to the observed outcomes. Interview data were analyzed using qualitative methods. Key informant interviews revealed three emergent themes: 1. accessibility and availability of healthcare, 2. the provision of a robust EMS system, and 3. coordination of county-funded services targeting vulnerable populations. The positive deviance framework provides a foundation for the identification of community factors or practices with the potential to create a 'culture of health' in communities at the greatest risk for adverse health outcomes. Our findings suggest that healthcare supported by the coordination of non-emergency transportation and health and social services across numerous stakeholders may have contributed to observed outcomes in the study counties.

Characterizing Micro-scale Disparities in Childhood Obesity: Examining the Influence of Multilevel Factors on 4-Year Changes in BMI, Healthy Eating, and Physical Activity, Among a Cohort of Children Residing in Disadvantaged Urban Enclaves

The childhood obesity epidemic in the United States disproportionately affects minority, low-income populations. Hispanics have one of the highest childhood obesity rates, and are the fastest growing population subgroup in the country. Past research has examined disparities in the occurrence of obesity, healthy eating, and physical activity at a macro-geographic level, with less emphasis on examining the multilevel, micro-scale determinants of childhood obesity in disadvantaged urban ethnic enclaves. The aim of our study was to identify child-, parental-, familial-, community-, and neighborhood-level factors associated with differences in 4-year changes in BMI, healthy eating, and physical activity, among children residing in low-income, predominantly Hispanic urban enclaves in Austin, Texas. This analysis used data from the Go Austin! Vamos Austin! (GAVA) Evaluation study, a cohort with 4 years of follow-up from 313 child-caregiver dyads. The dependent variables were change categories denoting 4-year increase, decrease, or no change in Body Mass Index (BMI) percentile, fruit and vegetable intake, and physical activity, among child participants. The independent variables were factors at multiple levels of the socio-ecological model: child, parental, familial, community, and environmental. Multinomial logistic regression models were used to estimate the odds of children being in the “increasing” or “decreasing” categories for the three dependent variables (vs. “no change”), in association with the studied independent variables. The results showed that among children residing in this low-income, predominantly Hispanic urban enclave, weight gain prevention and weight loss have different determinants. We identified relevant micro-scale disparities, and micro-level factors of influence on child BMI and its related health behaviors, at all levels of the socio-ecological model. Our results revealed evidence, through the characterization of positive deviance cases (children for whom decreases in BMI, increases in fruit and vegetable intake, or increases in physical activity were observed) which could potentially help mitigate established unhealthy habits among high need populations. Factors associated with positive deviance for BMI (decreases in child BMI) included male child sex (OR: 0.33, 95% CI: 0.12–0.83) and living in a food-insecure household (OR: 0.24, 95% CI: 0.13–0.79). Our findings may inform the design of obesity prevention interventions in these types of disadvantaged urban Hispanic enclaves.

Growing Healthy Together: protocol for a randomized clinical trial using parent mentors for early childhood obesity intervention in a Latino community

BACKGROUND

Latino children in the US experience high rates of obesity, increasing their risk of subsequent diabetes. There are few clinical trials among low-income, Latino families to test interventions that account for and address their unique situation.

METHODS/DESIGN

This trial, conducted in a Head Start (early childhood education) setting, randomly assigns children 2-5 years of age who have obesity by CDC (Centers for Disease Control and Prevention) guidelines (at least 95th percentile body mass index) and their parents to one of three conditions: (1) control, (2) parent mentor with an experimental curriculum, or (3) parent mentor with a standard curriculum (active control). We designed the experimental arm (2) using data from positive deviants: low-income, Latino families who had been successful in moving their child toward a healthy weight. Parent mentors are recruited and trained from the Head Start centers. Parent mentors then facilitate the teaching and coaching of parent-child dyads with weekly interactions over the course of a 6-month period. The primary outcome is change in adjusted body mass index z-score at the end of intervention and at 6 months post-intervention. Secondary outcomes include generalized self-efficacy, dietary intake, the home food environment, and reported physical activity.

DISCUSSION

This clinical trial contributes to the field by evaluating parent mentoring interventions that are potentially scalable for a population at high risk for continued obesity and subsequent morbidity and mortality.

TRIAL REGISTRATION

This trial was registered on October 31, 2017 (ClinicalTrials.gov identifier: NCT03330743 ).

Developing a patient-centered outcome for targeting early childhood obesity across multiple stakeholders

Background

Patient-centered outcome measures for childhood obesity are limited. Identifying outcomes that patients and families consider important could be a viable avenue for better engagement of patients and interventions that are efficacious and acceptable to patients. Latino children experience high rates of obesity, and under-recognition of obesity in preschool aged children is common.

Methods

We used growth chart data to identify low-income, Latino children 2-5 years of age with obesity who decreased their adiposity (positive deviants) and a set of controls. We used qualitative interview data to identify themes around goals parents used in addressing weight. Then, we applied a modified Delphi approach across groups of caregivers and providers to identify common goals. We conducted focus groups to explore conflicts and congruency between caregivers and providers related to goals. Using the focus group data, we developed a decision tool for use between patients and providers relevant for early childhood obesity.

Results

We identified 257 children who successfully reduced adiposity (positive deviants) from 1621 eligible growth charts. From interviews with 44 parents (21 positive deviants and 23 controls), we coded and categorized outcomes such as increased happiness, clothing size and improved activity. We recruited 81 parents, grandparents and health care providers to participate in the modified Delphi process of ranking outcomes by importance and feasibility. Focus groups (2, total n = 24) suggested potential methods for a common framework to discuss goals, including a modified growth chart. We created a decision-tool that incorporated a growth chart and a section for discussion of patient-centered goals. A final focus group (1, n = 10) provided feedback on the tool as acceptable and potentially useful.

Conclusions

The development of a patient-centered tool around achieving a healthy weight in early childhood identified common goals between providers and parents. While the tool has been developed, prospective testing of this patient-centered tool and its effects on engagement, parent motivation, and behavior change would be a useful next step.