Health Behavior and Behavioral Economics: Economic Preferences and Physical Activity Stages of Change in a Low-Income African American Community Page: 4
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Leonard et al.
American sample, for which the policy implications of understanding this relationship are
significant. African Americans are less likely to engage in sufficient health promoting
Z physical activity than their white counterparts, less likely to have health insurance, yet
conversely more likely to be suffer from chronic conditions such as obesity and diabetes,
-u which are often preventable through physical activity promotion (1).
Methods
0
Design
Study data come from the second cross-sectional wave of data collection (October 2009-
February 2010) in a longitudinal research project studying effects of public investment in a
low-income, minority neighborhood (36). The urban Texas neighborhood examined has
approximately 20,000 residents of which 70 percent are African American and 26 percent
are Hispanic. Median annual income in the neighborhood is $19,939 (estimates based on US
Census, 2005-2009 American Community Survey 5 Year Estimates).
The Study was approved by the University of Texas at Dallas, University of Texas
Southwestern Medical Center and University of Texas Health Science Center Institutional
Z Review Boards. Written consent was obtained from all participants. Participants completed a
detailed survey collecting socio-economic, perceptions, lifestyle, and behavioral data.
Anthropometric measures were collected by trained personnel at the time participants
completed the survey. Trained personnel measured weight and height using a calibrated
digital scale and stadiometer (37). Waist circumference was measured at the umbilicus level
with a tape measure (Seca 72" Tape). Due to the cost of conducting the economic
experiments, a randomly selected subset of these participants were recruited back to
participate in monetarily incentivized economic experiments. All participants were
o compensated for their time: $30- survey and $20 -economic experiments. Additionally, the
economic experiments described below and in Figure1 provided the opportunity to earn
additional compensation based on responses to the experimental protocols (mean=$50.42,
SD=$21.52). We analyzed these cross-sectional data to examine the association between
economic preferences as derived from the economic experiments and participants' stages of
change measured via questionnaires.
Z Sample
The sample was recruited based on information obtained from a geographically weighted
sample selected to represent households at varying distances from 3 new light rail transit
stations in the neighborhood. Because the goal of the larger study was to examine the impact
of light rail investment on child behavior outcomes, families with children were
preferentially selected into the study. Participants were recruited by community-based field
researchers who made initial contact at the participants' home and invited them to come to a
community-based field research station to complete the data collection. Survey data and
on objective obesity measures were collected from 496 participants. Of these, 198 randomly
selected participants participated in economic experiments. T-tests were conducted to
compare mean characteristics of the sample that participated in the economic experiments
versus the sample that completed only survey and obesity measures. The two samples wereAm JHealth Promot. Author manuscript; available in PMC 2014 November 09.
Page 4
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Leonard, Tammy; Shuval, Kerem; de Oliveira, Angela; Sugg Skinner, Celette; Eckel, Catherine & Murdoch, James. Health Behavior and Behavioral Economics: Economic Preferences and Physical Activity Stages of Change in a Low-Income African American Community, article, March 1, 2013; Thousand Oaks, California. (https://digital.library.unt.edu/ark:/67531/metadc1010769/m1/4/: accessed April 25, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT College of Arts and Sciences.