Adaptability The ability to modify an intervention to fit the cultural context in which the intervention will take place and the unique circumstances of the agency and other stakeholders, without contradicting the intervention’s core elements and internal logic.

Adoption The decision to use an intervention as the best course of action available. Within the RE-AIM framework, adoption is measured as the absolute number, proportion, and representativeness of settings and/or intervention staff (people who deliver the program) that are willing to initiate a program.

Archival study The use of a model based on past evidence or decisions on a behavior or intervention for purposes of predicting future behavior.

Assessment In this report, refers to the process of observing, describing, collecting data on, and measuring the quality and effectiveness of an intervention or policy. See also Evaluation.

Benefits Positive effects brought about by an intervention or policy (intended or unintended).

Body mass index An indirect measure of body fat, calculated as the ratio of a person’s body weight (in kilograms) to the square of a person’s height (in meters):

BMI (kg/m2) = weight (kilograms) ÷ height (meters)2

BMI (lb/in2) = weight (pounds) ÷ height (inches) 2 × 703

In adults, a body mass index (BMI) of 25 or greater is considered overweight, and a BMI of 30 or greater is considered obese. In children and youth, BMI is based on growth charts for age and gender and is referred to as BMI for age, which is used to assess underweight, overweight, and risk for overweight. According to the Centers for Disease Control and Prevention (CDC), a child with a BMI for age that is equal to or greater than the 95th percentile is considered obese. A child with a BMI for age that is equal to or between the 85th and 95th percentiles is overweight.

BMI z-score Number of standard deviations away from the population mean BMI; in other words, the degree to which an individual’s measurement deviates from what is expected for that individual.

Case study research Qualitative research in which the investigator explores a bounded system (a case) or multiple bounded systems (cases) over time through detailed, in-depth data collection involving multiple sources of information (e.g., observations, interviews, audiovisual material, and documents and reports), and reports a case description and case-based themes.

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