Publications by authors named "Christina Roberto"

Importance: Taxation of sweetened beverages is a proposed strategy to reduce excess sugar consumption. The association of such taxes with health outcomes is not well studied. Philadelphia, Pennsylvania, is the largest US city with a beverage tax.

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Background: Sweetened beverage taxes are associated with large decreases in sugar-sweetened beverage sales, but their effects on weight outcomes are unclear. We examined associations of the 2017 Philadelphia beverage tax with changes in adult weight outcomes.

Methods: We obtained electronic health record data on adults 18-65 years old in Philadelphia (intervention) and other areas of Pennsylvania and New Jersey (control) from 2014 to 2019.

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Importance: Point-of-sale food messaging can encourage healthier purchases, but no studies have directly compared multiple interventions in the field.

Objective: To examine which of 4 food and beverage messages would increase healthier vending machine purchases.

Design, Setting, And Participants: This randomized trial assessed 13 months (February 1, 2019, to February 29, 2020) of vending sales data from 267 machines and 1065 customer purchase assessments from vending machines on government property in Philadelphia, Pennsylvania.

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Introduction: On January 1, 2017, Philadelphia implemented a beverage excise tax. The study's objective was to determine whether beverage advertising expenditures and the number of beverage ads purchased changed in Philadelphia compared to Baltimore because of this tax.

Methods: Monthly beverage ad expenditures and the number of beverage ads purchased by brand from January 2016 through December 2019 were obtained.

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Objective: To assess the impact of the Philadelphia Beverage Tax on perceived beverage healthfulness, and awareness and opinions of the tax.

Design: Natural experiment SETTING: Small independent stores in Philadelphia (n = 61) and Baltimore (untaxed control site; n = 65) PARTICIPANTS: Shoppers in Philadelphia (n = 2,731) and Baltimore (n = 4,600) pre- and post-tax implementation.

Main Outcome Measures: Perceptions of 4 beverages (unhealthy vs healthy/neutral), tax awareness, and tax opinions (oppose vs favor/neutral).

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Article Synopsis
  • - The study analyzed how caregivers' feelings of competence and autonomy affect what they buy for their children at fast food places, focusing on side dishes, drinks, and desserts.
  • - Caregivers who felt more competent and autonomous were more likely to order fruits and vegetables as side dishes, but higher competence also led to more dessert purchases.
  • - The results indicate that boosting caregivers' psychological needs could help promote healthier eating choices for their children in restaurant settings.
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The COVID-19 pandemic has been stressful, potentially affecting caregivers' feeding choices. Caregivers play a role in shaping children's diets, yet few studies have explored how their competence and autonomy, defined by the Self-Determination Theory, impact children's diets. We examined the relationship between caregivers' autonomy and competence and their feeding practices before and during the first year of the pandemic.

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Conceptualising ultra-processed foods high in carbohydrates and fats as addictive substances can contribute to efforts to improve health, argue

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Introduction: In 2017, Philadelphia enacted a $0.015 per ounce excise tax on SBs that covered both sugar-sweetened beverages and artificially-sweetened beverages, which reduced purchasing and consumption. This study assessed whether the tax also changed beverage advertising or stocking practices that could influence consumer behavior among stores in Philadelphia, Baltimore, and Philadelphia-adjacent counties not subject to the tax.

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Unhealthy diets are a major impediment to achieving a healthier population in the United States. Although there is a relatively clear sense of what constitutes a healthy diet, most of the US population does not eat healthy food at rates consistent with the recommended clinical guidelines. An abundance of barriers, including food and nutrition insecurity, how food is marketed and advertised, access to and affordability of healthy foods, and behavioral challenges such as a focus on immediate versus delayed gratification, stand in the way of healthier dietary patterns for many Americans.

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Importance: Policymakers and researchers have proposed a variety of interpretative front-of-package food labeling systems, but it remains unclear which is most effective at encouraging people to choose healthier foods and beverages, including among people with less education.

Objective: To test the effects of 4 interpretative front-of-package food labeling systems on the healthfulness of beverage and snack selections, overall and by education level.

Design, Setting, And Participants: This randomized clinical trial of a national sample of US adults 18 years and older was conducted online from November 16 to December 3, 2022.

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Individual-level interventions are often interesting and easy to implement, but are unfortunately ill-equipped to solve most major global problems (e.g., climate change, financial insecurity, unhealthy eating).

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Importance: Taxes on sweetened beverages are being implemented around the globe; an understanding of these taxes on individual-level behavior is necessary.

Objective: To evaluate the degree to which the sweetened beverage tax in Philadelphia, Pennsylvania, was associated with changes in beverage prices and individual-level purchasing over time at a national pharmacy chain in Philadelphia compared with Baltimore, Maryland.

Design, Setting, And Participants: Using a difference-in-differences approach and generalized linear mixed models, this cohort study examined beverage purchases made by loyalty cardholders at a national chain pharmacy retailer with stores in Philadelphia and Baltimore (control city) from before tax to after tax.

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Introduction: To reduce added-sugar consumption, jurisdictions are considering requiring restaurant menu labels to identify high-added-sugar items. This study examined the impacts of added-sugar warning labels on hypothetical choices, knowledge of items' added-sugar content, and perceptions of high-added-sugar items.

Study Design: The design was an online RCT.

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Article Synopsis
  • Young consumers often find nutrition facts tables (NFTs) on packaged foods confusing, which has led to the adoption of simpler front-of-package labels (FOPLs) in various countries, including Mexico's recent shift to 'Warning' FOPLs that highlight unhealthy nutrients with stop signs.
  • A study compared the awareness and understanding of NFTs and FOPLs among young people in Mexico and five other countries, analyzing changes before and after Mexico implemented its 'Warning' policy through national surveys conducted in 2019 and 2020.
  • Results indicated that young people in Mexico showed significantly higher awareness, use, and understanding of the 'Warning' FOPLs compared to NFTs, with a pronounced difference in Mexico after the policy change compared
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Importance: Despite recent growth in online redemption of Supplemental Nutrition Assistance Program (SNAP) benefits, no previous work has tested the impact of economic and behavioral economic strategies on food purchasing behaviors in an online grocery retail setting among adults with low income.

Objective: To examine the extent to which financial incentives and default shopping cart options influence fruit and vegetable purchases.

Design, Setting, And Participants: This randomized clinical trial used an experimental online grocery store for adults who currently or have ever received SNAP benefits.

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Introduction: Beverage taxes are associated with declines in sugar-sweetened beverage sales and consumption, but few studies have evaluated the associations of these taxes with health outcomes. This study analyzed changes in dental decay after the implementation of the Philadelphia sweetened beverage tax.

Methods: Electronic dental record data were obtained on 83,260 patients living in Philadelphia and control areas from 2014 to 2019.

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Introduction: Large portions, which can lead people to eat more, are becoming increasingly common in U.S. restaurants.

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  • A study investigated how different warning labels on sugar-sweetened beverages (SSBs) affect beverage choices and perceptions among parents of 6-11-year-olds.
  • Participants viewed one of four labels: no-warning, health-related text, sugar pictorial (sugar content), or health pictorial (health consequences).
  • The study found that the sugar pictorial warning significantly reduced SSB choices and improved understanding of added sugar content compared to other labels.
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  • Impulsivity is linked to making poor food choices, with nudge interventions potentially helping high impulsivity individuals improve their diets.
  • A study involving 487 hospital employees examined how different types of impulsivity affect the success of a 12-month nudge intervention aimed at promoting healthier cafeteria food purchases.
  • Results showed that while all employees increased healthy eating, those with higher trait impulsivity had smaller gains in healthy purchases, but the intervention reduced weight gain among those with high action impulsivity.
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Background: Online grocery shopping has surged in popularity, but we know little about online grocery shopping behaviors and attitudes of adults with low income, including differences by age. Methods: From October to November 2021, we used a survey research firm to recruit a convenience sample of adults who have ever received Supplemental Nutrition Assistance Program (SNAP) benefits (n = 3526). Participants completed an online survey designed to assess diet and online food shopping behaviors.

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