Browsing by Author "Block, Jason"

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    Characteristics of achieving clinically important weight loss in two paediatric weight management interventions
    (Wiley, 2021) Fiechtner, Lauren; Castro, Ines; Cheng, Erika R.; Sharifi, Mona; Gerber, Monica W.; Luo, Man; Goldmann, Don; Sandel, Megan; Block, Jason; Orav, E. John; Taveras, Elsie M.; Pediatrics, School of Medicine
    Objective: To examine characteristics and lifestyle behaviours associated with achieving clinically important weight loss (CIWL) in two paediatric weight management interventions (PWMIs). Methods: We examined 1010 children enrolled in the STAR and Connect for Health trials. We defined achieving CIWL as any participant who had decreased their BMI z-score by ≥0.2 units over 1 year. Using log-binomial regression we examined associations of child and household characteristics and lifestyle behaviours with achieving CIWL. Results: In multivariable analyses, children with severe obesity had a lower likelihood of achieving CIWL compared to children without severe obesity (RR: 0.68 [95% CI: 0.49, 0.95]). Children who were ≥10 years were less likely to achieve CIWL (RR: 0.56 [95% CI: 0.42, 0.74]) vs those 2-6 years of age. Children who consumed <1 sugary beverage per day at the end of the intervention were more likely to achieve CIWL vs those who did not meet the goal (RR: 1.36 [95% CI 1.09-1.70]). Conclusion: In this analysis of children enrolled in PWMIs, achieving CIWL was associated with younger age, not having severe obesity and consuming fewer sugary beverages at the end of the intervention. Focusing on intervening earlier in life, when a child is at a lower BMI, and reducing sugary beverages could allow for more effective PWMI's.
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    Effects of Proximity to Supermarkets on a Randomized Trial Studying Interventions for Obesity
    (American Public Health Association, 2016-03) Fiechtner, Lauren; Kleinman, Ken; Melly, Steven J.; Sharifi, Mona; Marshall, Richard; Block, Jason; Cheng, Erika R.; Taveras, Elsie M.; Department of Pediatrics, IU School of Medicine
    OBJECTIVES: To determine whether proximity to a supermarket modified the effects of an obesity intervention. METHODS: We examined 498 children aged 6 to 12 years with a body mass index (BMI) at or above the 95th percentile participating in an obesity trial in Massachusetts in 2011 to 2013. The practice-based interventions included computerized clinician decision support plus family self-guided behavior change or health coaching. Outcomes were 1-year change in BMI z-score, sugar-sweetened beverage intake, and fruit and vegetable intake. We examined distance to the closest supermarket as an effect modifier. RESULTS: Distance to supermarkets was an effect modifier of 1-year change in BMI z-score and fruit and vegetable intake but not sugar-sweetened beverage intake. With each 1-mile shorter distance to a supermarket, intervention participants increased their fruit and vegetable intake by 0.29 servings per day and decreased their BMI z-score by -0.04 units relative to controls. CONCLUSIONS: Living closer to a supermarket is associated with greater improvements in fruit and vegetable intake and weight status in an obesity intervention.