K De La Haye

Biographic Data

ID	13854
NAME	K De La Haye
GIVEN NAMES	K
FAMILY NAME	De La Haye
SIGNATURE	DE LA HAYE K
AFFILIATIONS	University of Southern California
ORCID	0000-0002-2536-7701
VERIFIED	Yes
TOTAL WORKS	33
TOTAL CITATIONS	78
AUTHOR COUNT	33
EDITOR COUNT	0
FIRST PUBLICATION YEAR	2009
LATEST PUBLICATION YEAR	2026
H-INDEX	5

Barriers and enablers to reduced meat intake and perceptions of sustainable diets, among Los Angeles County adults with low incomes: A qualitative interview study
Open AccessKatherine Baker, Avaion Ruth et al.ARTICLEFrontiers in Public Health2026
Introduction: Because of the environmental impacts of meat production, sustainable eating emphasizes eating less meat, and especially less red and processed meat. Here, barriers and enablers to reducing meat intake, and perceptions of sustainable diets, were examined among adults with low income, who often face barriers to food access and choice. The implementation science framework COM-B (Capability, Opportunity, Motivation, Behavior) model was …
Extending the space–time prism for multimodal, household-level accessibility modeling: A GIS-based framework applied to food access in Los Angeles, CA
Open AccessMengya Xu, Michelle Sarah Livings et al.ARTICLEApplied Geography2026
Not eating red meat is associated with reporting the environment and climate change as a top concern: Evidence from a national U.S. survey
Open AccessPatrycja Śleboda, W Bruine De Bruin et al.ARTICLEHumanities and Social Sciences…2026
Eating excess red meat has negative consequences for the environment. However, it is unclear whether having the environment and climate change as a top concern plays a role in whether or not Americans eat red meat. In a secondary analysis of survey data collected with a representative U.S. sample (N = 7375), we examined (1) the percent of participants who self-reported not eating red meat and how it varied with socio-demographics, and (2) the ext…
Adherence to the combined Mediterranean-dietary approaches to stop hypertension diet is shaped by neighborhood socio-economics and food environments
Open AccessJessie Heneghan, Jessie L Heneghan et al.ARTICLEHealth & Place2025
Dietary recommendations, especially precision nutrition approaches, should take into consideration the surrounding food environment and ways to make suggested diets more feasible
Rethinking food access at the household level under the 15-min city framework
Open AccessMengya Xu, K De La Haye et al.ARTICLECities2025References: 4
Social Networks, Health Support, and Dietary Intake in Mothers Receiving Home Visiting Services
Open AccessSydney Miller, Sarah-Jeanne Salvy et al.ARTICLEJournal of Racial and Ethnic…2025References: 54
Home visiting programs (HVPs) provide services to pregnant individuals and parents of young children to improve families' health and well-being. However, little is known about these families' social contexts. This study explores the social networks and dietary intake of mothers enrolled in a HVP, focusing on health support and health undermining. Cross-sectional data from 76 mothers enrolled in a HVP in Los Angeles County were collected by interv…
Socio-ecological factors linked with changes in adults’ dietary intake in Los Angeles County during the peak of the coronavirus 2019 pandemic
Open AccessSydney Miller, Trevor A Pickering et al.ARTICLEPublic Health Nutrition2024
Objective: Comprehensive studies examining longitudinal predictors of dietary change during the coronavirus disease 2019 pandemic are lacking. Based on an ecological framework, this study used longitudinal data to test if individual, social and environmental factors predicted change in dietary intake during the peak of the coronavirus 2019 pandemic in Los Angeles County and examined interactions among the multilevel predictors. Design: We analyse…
New insights into grocery store visits among east Los Angeles residents using mobility data
Open AccessMengya Xu, James P Wilson et al.ARTICLEHealth & Place2024References: 11
Vulnerability or Resiliency? A Two-Wave Panel Analysis of Social Network Factors Associated with Glycemic Levels among Mexican Immigrants in the Bronx, NYC, Before and During Covid-19
Open AccessKaren R Flórez, Neil Hwang et al.ARTICLEJournal of Urban Health2024Cited by: 2References: 2
Understanding food insecurity in Los Angeles County during the Covid-19 pandemic and its aftermath: A qualitative interview study
Open AccessJose J Scott, W Bruine De Bruin et al.ARTICLEAppetite2024Cited by: 1References: 53
Ecological risk and protective factors for food insufficiency in Los Angeles County during the Covid-19 pandemic
Open AccessK De La Haye, Htay-Wah Saw et al.ARTICLEPublic Health Nutrition2023
Objective: The COVID-19 pandemic increased food insufficiency: a severe form of food insecurity. Drawing on an ecological framework, we aimed to understand factors that contributed to changes in food insufficiency from April to December 2020, in a large urban population hard hit by the pandemic. Design: We conducted internet surveys every 2 weeks in April–December 2020, including a subset of items from the Food Insecurity Experience Scale. Longit…
Nosotros mismos nos estamos matando/We are the ones killing ourselves: Unraveling individual and network characteristics associated with negative dietary acculturation among Mexican Americans in New Y…
Open AccessKaren R Flórez, Brooke M Bell et al.ARTICLEAppetite2023Cited by: 3References: 53
Examining food intake similarities in adolescent best friend dyads using longitudinal Actor-Partner Interdependence Models
Open AccessNina van den Broek, K De La Haye et al.ARTICLEAppetite2022References: 56
Little is known about how adolescent best friends may affect each other's food intake. This study explored whether friendship selection and socialization mechanisms explained potential food intake similarities in adolescent reciprocated best friend dyads. We also tested whether socialization processes were moderated by dyad member's relative zBMI. Members of 145 same-gender best friendship dyads (56% female; Mage = 12.79; SDage = 0.61) reported o…
Exponential random graph models for little networks
Open AccessG G Vega Yon, Andrew J Slaughter et al.ARTICLESocial Networks2021
Statistical models for social networks have enabled researchers to study complex social phenomena that give rise to observed patterns of relationships among social actors and to gain a rich understanding of the interdependent nature of social ties and actors. Much of this research has focused on social networks within medium to large social groups. To date, these advances in statistical models for social networks, and in particular, of Exponentia…
Self-reported dietary changes among Los Angeles County adults during the Covid-19 pandemic
Open AccessSydney Miller, W Bruine De Bruin et al.ARTICLEAppetite2021Cited by: 5References: 32
Poor diets are historically the leading cause of morbidity and mortality in the United States (U.S.), causing over 44,000 deaths each month. Dietary patterns have likely changed during the COVID-19 pandemic due to major shifts and crises in social, economic, and food systems. This study examines self-reported dietary changes in Los Angeles (L.A.) County during COVID-19, and identifies factors associated with making healthy and unhealthy changes. …
Leveraging Emergent Social Networks to Reduce Sedentary Behavior in Low-Income Parents With Preschool-Aged Children
Open AccessSabina B Gesell, Shari L Barkin et al.ARTICLESAGE Open2021Cited by: 1References: 39
This study tested the hypothesis that parents participating in a pediatric obesity intervention who formed social network ties with a parent in the intervention arm would engage in more daily physical activity and less sedentary behavior (after controlling for participant covariates). Data were collected at baseline, 12 months, and 36 months from 610 low-income parent-child pairs participating in an obesity prevention intervention for 3- to 5-yea…
Identifying Social Network Conditions that Facilitate Sedentary Behavior Change: The Benefit of Being a “Bridge” in a Group-based Intervention
Open AccessSabina B Gesell, K De La Haye et al.ARTICLEInternational Journal of…2020
Using data from one of the first trials to try to leverage social networks as a mechanism for obesity intervention, we examined which social network conditions amplified behavior change. Data were collected as part of a community-based healthy lifestyle intervention in Nashville, USA, between June 2014 and July 2017. Adults randomized to the intervention arm were assigned to a small group of 10 participants that met in person for 12 weekly sessio…
Social network interventions for health behaviours and outcomes: A systematic review and meta-analysis
Open AccessRuth F Hunter, K De La Haye et al.ARTICLEPLoS Medicine2019
Smoking Diffusion through Networks of Diverse, Urban American Adolescents over the High School Period
Open AccessK De La Haye, Heesung Shin et al.ARTICLEJournal of Health and Social…2019Cited by: 1References: 35
This study uses recent data to investigate if smoking initiation diffuses through friendship networks over the high school period and explores if diffusion processes differ across schools. One thousand four hundred and twenty-five racially and ethnically diverse youth from four high schools in Los Angeles were surveyed four times over the high school period from 2010 to 2013. Probit regression models and stochastic actor-based models for network …
Personal Network Characteristics as Predictors of Change in Obesity Risk Behaviors in Early Adolescence
Open AccessJennifer B Marks, K De La Haye et al.ARTICLEJournal of Research on Adolescence2018References: 4
The potential for peers to influence obesity risk behavior increases in adolescence, yet there are knowledge gaps of how behaviors are modified in response to peers over time. This study examined how personal friendship network characteristics were associated with obesity-related behaviors from late childhood to early adolescence. Two waves of friendship, physical activity, screen time, and dietary recall data were collected from 11- to 13-year-o…
The Co-evolution of Bullying Perpetration, Homophobic Teasing, and a School Friendship Network
Open AccessGabriel J Merrin, K De La Haye et al.ARTICLEJournal of Youth and Adolescence2018Cited by: 2References: 76
Analytic strategies for longitudinal networks with missing data
Open AccessK De La Haye, Joshua Embree et al.ARTICLESocial Networks2017
Whole of Systems Trial of Prevention Strategies for Childhood Obesity: WHO STOPS Childhood Obesity
Open AccessSteven Allender, Lynne Millar et al.ARTICLEInternational Journal of…2016
Background : Community-based initiatives show promise for preventing childhood obesity. They are characterized by community leaders and members working together to address complex local drivers of energy balance. Objectives : To present a protocol for a stepped wedge cluster randomized trial in ten communities in the Great South Coast Region of Victoria, Australia to test whether it is possible to: (1) strengthen community action for childhood ob…
Protocol for a randomized controlled trial testing the impact of feedback on familial risk of chronic diseases on family-level intentions to participate in preventive lifestyle behaviors
Open AccessCarlene Wilson, Carlene J Wilson et al.ARTICLEBMC Public Health2016
Australian New Zealand Clinical Trials Registry ACTRN12613001033730 . Retrospectively registered: 17 September, 2013
The Power of Place: Social Network Characteristics, Perceived Neighborhood Features, and Psychological Distress Among African Americans in the Historic Hill District in Pittsburgh, Pennsylvania
Open AccessKaren R Flórez, Madhumita Ghosh-Dastidar et al.ARTICLEAmerican Journal of Community…2016Cited by: 6References: 45
African American neighborhoods have been historically targeted for urban renewal projects, which impact social composition and resident's health. The Hill District in Pittsburgh, PA is such a neighborhood. This research sought to investigate the extent to which social networks and perceived neighborhood social cohesion and safety were associated with psychological distress among residents in an African American neighborhood undergoing urban renew…

Obesity-related behaviors in adolescent friendship networks
Open AccessK De La Haye, G Robins et al.ARTICLESocial Networks2009
How physical activity shapes, and is shaped by, adolescent friendships
Open AccessK De La Haye, G Robins et al.ARTICLESocial Science & Medicine2011
Influence of peers and friends on children's and adolescents' eating and activity behaviors
Open AccessSarah-Jeanne Salvy, Sarah‐jeanne Salvy et al.ARTICLEPhysiology & Behavior2012
Who Is Supporting Homeless Youth? Predictors of Support in Personal Networks
Open AccessK De La Haye, Helena D Green et al.ARTICLEJournal of Research on Adolescence2012Cited by: 17References: 11
Homeless youth lack the traditional support networks of their housed peers, which increases their risk for poor health outcomes. Using a multilevel dyadic analytic approach, this study identified characteristics of social contacts, relationships, and social networks associated with the provision of tangible and emotional support to homeless youth (N = 419, M age = 20.09, SD = 2.80). Support providers were likely to be family members, sex-partners…
Adolescents’ Intake of Junk Food: Processes and Mechanisms Driving Consumption Similarities Among Friends
Open AccessK De La Haye, G Robins et al.ARTICLEJournal of Research on Adolescence2013Cited by: 15References: 7
Adolescents’ consumption of low‐nutrient, energy‐dense ( LNED ) food often occurs out of home, and friends may be an important source of influence. This study tested whether observed similarities in LNED food intake among friends result from social influence and also explored underlying psychological mechanisms. Three waves of data were collected over 1 year from Grade 8 students in A ustralia ( N = 378, 54% male), including measures of food inta…
Selection and Influence Mechanisms Associated With Marijuana Initiation and Use in Adolescent Friendship Networks
Open AccessK De La Haye, Helena D Green et al.ARTICLEJournal of Research on Adolescence2013Cited by: 22References: 9
Friends are thought to influence adolescent drug use. However, few studies have examined the role of drugs in friendship selection, which is necessary to draw sound conclusions about influence. This study applied statistical models for social networks to test the contribution of selection and influence to associations in marijuana use among friends in two large high schools ( N = 1,612; M age = 16.4). There was evidence for friend selection based…
Befriending Risky Peers: Factors Driving Adolescents’ Selection of Friends with Similar Marijuana Use
Open AccessK De La Haye, Helena D Green et al.ARTICLEJournal of Youth and Adolescence2015Cited by: 3References: 40
Whole of Systems Trial of Prevention Strategies for Childhood Obesity: WHO STOPS Childhood Obesity
Open AccessSteven Allender, Lynne Millar et al.ARTICLEInternational Journal of…2016
Background : Community-based initiatives show promise for preventing childhood obesity. They are characterized by community leaders and members working together to address complex local drivers of energy balance. Objectives : To present a protocol for a stepped wedge cluster randomized trial in ten communities in the Great South Coast Region of Victoria, Australia to test whether it is possible to: (1) strengthen community action for childhood ob…
Protocol for a randomized controlled trial testing the impact of feedback on familial risk of chronic diseases on family-level intentions to participate in preventive lifestyle behaviors
Open AccessCarlene Wilson, Carlene J Wilson et al.ARTICLEBMC Public Health2016
Australian New Zealand Clinical Trials Registry ACTRN12613001033730 . Retrospectively registered: 17 September, 2013
The Power of Place: Social Network Characteristics, Perceived Neighborhood Features, and Psychological Distress Among African Americans in the Historic Hill District in Pittsburgh, Pennsylvania
Open AccessKaren R Flórez, Madhumita Ghosh-Dastidar et al.ARTICLEAmerican Journal of Community…2016Cited by: 6References: 45
African American neighborhoods have been historically targeted for urban renewal projects, which impact social composition and resident's health. The Hill District in Pittsburgh, PA is such a neighborhood. This research sought to investigate the extent to which social networks and perceived neighborhood social cohesion and safety were associated with psychological distress among residents in an African American neighborhood undergoing urban renew…
Friendship networks and sun safety behavior among children
Open AccessJennifer Tsai, T W Valente et al.ARTICLENetwork Science2016References: 5
Social networks, particularly those defined by friendships, influence many childhood and adolescent health behaviors such as the use of alcohol, tobacco, and other drugs, as well as diet and physical activity. Few, if any, studies have examined the concordance between friendship networks and sun exposure/safety behaviors. This study examines the friendship networks and sun safety behaviors for a group of fourth and fifth grade students taking par…
Analytic strategies for longitudinal networks with missing data
Open AccessK De La Haye, Joshua Embree et al.ARTICLESocial Networks2017
Personal Network Characteristics as Predictors of Change in Obesity Risk Behaviors in Early Adolescence
Open AccessJennifer B Marks, K De La Haye et al.ARTICLEJournal of Research on Adolescence2018References: 4
The potential for peers to influence obesity risk behavior increases in adolescence, yet there are knowledge gaps of how behaviors are modified in response to peers over time. This study examined how personal friendship network characteristics were associated with obesity-related behaviors from late childhood to early adolescence. Two waves of friendship, physical activity, screen time, and dietary recall data were collected from 11- to 13-year-o…
The Co-evolution of Bullying Perpetration, Homophobic Teasing, and a School Friendship Network
Open AccessGabriel J Merrin, K De La Haye et al.ARTICLEJournal of Youth and Adolescence2018Cited by: 2References: 76
Social network interventions for health behaviours and outcomes: A systematic review and meta-analysis
Open AccessRuth F Hunter, K De La Haye et al.ARTICLEPLoS Medicine2019
Smoking Diffusion through Networks of Diverse, Urban American Adolescents over the High School Period
Open AccessK De La Haye, Heesung Shin et al.ARTICLEJournal of Health and Social…2019Cited by: 1References: 35
This study uses recent data to investigate if smoking initiation diffuses through friendship networks over the high school period and explores if diffusion processes differ across schools. One thousand four hundred and twenty-five racially and ethnically diverse youth from four high schools in Los Angeles were surveyed four times over the high school period from 2010 to 2013. Probit regression models and stochastic actor-based models for network …
Identifying Social Network Conditions that Facilitate Sedentary Behavior Change: The Benefit of Being a “Bridge” in a Group-based Intervention
Open AccessSabina B Gesell, K De La Haye et al.ARTICLEInternational Journal of…2020
Using data from one of the first trials to try to leverage social networks as a mechanism for obesity intervention, we examined which social network conditions amplified behavior change. Data were collected as part of a community-based healthy lifestyle intervention in Nashville, USA, between June 2014 and July 2017. Adults randomized to the intervention arm were assigned to a small group of 10 participants that met in person for 12 weekly sessio…
Exponential random graph models for little networks
Open AccessG G Vega Yon, Andrew J Slaughter et al.ARTICLESocial Networks2021
Statistical models for social networks have enabled researchers to study complex social phenomena that give rise to observed patterns of relationships among social actors and to gain a rich understanding of the interdependent nature of social ties and actors. Much of this research has focused on social networks within medium to large social groups. To date, these advances in statistical models for social networks, and in particular, of Exponentia…
Self-reported dietary changes among Los Angeles County adults during the Covid-19 pandemic
Open AccessSydney Miller, W Bruine De Bruin et al.ARTICLEAppetite2021Cited by: 5References: 32
Poor diets are historically the leading cause of morbidity and mortality in the United States (U.S.), causing over 44,000 deaths each month. Dietary patterns have likely changed during the COVID-19 pandemic due to major shifts and crises in social, economic, and food systems. This study examines self-reported dietary changes in Los Angeles (L.A.) County during COVID-19, and identifies factors associated with making healthy and unhealthy changes. …
Leveraging Emergent Social Networks to Reduce Sedentary Behavior in Low-Income Parents With Preschool-Aged Children
Open AccessSabina B Gesell, Shari L Barkin et al.ARTICLESAGE Open2021Cited by: 1References: 39
This study tested the hypothesis that parents participating in a pediatric obesity intervention who formed social network ties with a parent in the intervention arm would engage in more daily physical activity and less sedentary behavior (after controlling for participant covariates). Data were collected at baseline, 12 months, and 36 months from 610 low-income parent-child pairs participating in an obesity prevention intervention for 3- to 5-yea…
Examining food intake similarities in adolescent best friend dyads using longitudinal Actor-Partner Interdependence Models
Open AccessNina van den Broek, K De La Haye et al.ARTICLEAppetite2022References: 56
Little is known about how adolescent best friends may affect each other's food intake. This study explored whether friendship selection and socialization mechanisms explained potential food intake similarities in adolescent reciprocated best friend dyads. We also tested whether socialization processes were moderated by dyad member's relative zBMI. Members of 145 same-gender best friendship dyads (56% female; Mage = 12.79; SDage = 0.61) reported o…
Ecological risk and protective factors for food insufficiency in Los Angeles County during the Covid-19 pandemic
Open AccessK De La Haye, Htay-Wah Saw et al.ARTICLEPublic Health Nutrition2023
Objective: The COVID-19 pandemic increased food insufficiency: a severe form of food insecurity. Drawing on an ecological framework, we aimed to understand factors that contributed to changes in food insufficiency from April to December 2020, in a large urban population hard hit by the pandemic. Design: We conducted internet surveys every 2 weeks in April–December 2020, including a subset of items from the Food Insecurity Experience Scale. Longit…
Nosotros mismos nos estamos matando/We are the ones killing ourselves: Unraveling individual and network characteristics associated with negative dietary acculturation among Mexican Americans in New Y…
Open AccessKaren R Flórez, Brooke M Bell et al.ARTICLEAppetite2023Cited by: 3References: 53
Socio-ecological factors linked with changes in adults’ dietary intake in Los Angeles County during the peak of the coronavirus 2019 pandemic
Open AccessSydney Miller, Trevor A Pickering et al.ARTICLEPublic Health Nutrition2024
Objective: Comprehensive studies examining longitudinal predictors of dietary change during the coronavirus disease 2019 pandemic are lacking. Based on an ecological framework, this study used longitudinal data to test if individual, social and environmental factors predicted change in dietary intake during the peak of the coronavirus 2019 pandemic in Los Angeles County and examined interactions among the multilevel predictors. Design: We analyse…
New insights into grocery store visits among east Los Angeles residents using mobility data
Open AccessMengya Xu, James P Wilson et al.ARTICLEHealth & Place2024References: 11