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Table 4 Simulation analyses of changes in father’s past weekly VPA frequency on youths’ weekly VPA participation and frequency

From: Multivariable analysis of the association between fathers’ and youths’ physical activity in the United States

  Panel 1: Logistic regression of fully-adjusted model
Predicted probability of youths’ weekly VPA participation (%)
Simulation scenarios: Full sample Male sample Female sample
 Baseline (i.e. no change) in father’s past weekly VPA frequency 72.05 76.26 69.27
 A one SD increase in father’s past weekly VPA frequencya 78.30 78.52 78.60
 Father’s past weekly VPA frequency set to 3.0b 74.47 77.30 72.92
 Father’s past weekly VPA frequency set to zero 66.67 74.46 60.83
  Panel 2: Negative binomial regression of fully-adjusted model
  Predicted rate of youths’ weekly VPA frequency (days/week)
Simulation scenarios: Full sample Male sample Female sample
 Baseline (i.e. no change) in father’s past weekly VPA frequency 2.85 3.22 2.42
 A one SD increase in father’s past weekly VPA frequencya 3.06 3.18 2.76
 Father’s past weekly VPA frequency set to 3.0b 2.93 3.20 2.52
 Father’s past weekly VPA frequency set to zero 2.71 3.25 2.19
  1. Notes: All simulation results are based on the fully-adjusted model. Fully-adjusted model (i.e. Equation 1) includes child and family characteristics, contextual measures, and mother’s past VPA, which are the following measures: Age, gender, race, mother’s education, mother’s work hours, family income, local area physical activity-related facility availability, local area median household income, local area degree of urbanization, mother’s past ( lagged t-2 = 2001) weekly number of times of vigorous physical activity participation.
  2. The independent variable of interest, “Father’s past weekly vigorous physical activity frequency” is a continuous measure of weekly number of times of father’s past (lagged t-2 = 2001) VPA.
  3. a A one standard deviation (SD) increase in father’s weekly VPA frequency (i.e. times/week) is an increase of 2.67, 2.50, and 2.84 times per week, respectively, for the full, male, and female samples. These standard deviation numbers are obtained from weighted summary statistics and are shown in Table 1.
  4. b Father’s weekly VPA frequency was set to three to approximate the minimum recommendation of the recent adult aerobic physical activity guidelines for important health benefits of the Centers for Disease Control and Prevention (CDC), which recommend 1 hour and 15 minutes of vigorous-intensity aerobic activity every week, as noted in the text.