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Table 5 Variation in within-person effect estimates of built and socioeconomic environment characteristics on MVPA between adolescence (Wave I, 1994-95) and young adulthood (Wave III, 2001-02) by residential relocation status1

From: Residential self-selection bias in the estimation of built environment effects on physical activity between adolescence and young adulthood

 

Movers2

Non-movers2

Total sample2

 

Elasticity

95% CI

Elasticity

95% CI

Elasticity

95% CI

Landscape diversity

-0.004

(-0.026, 0.017)

-0.072*

(-0.116, -0.029)

--2

Pay facility availability (count/10,000 population)

      

Males

--2

--2

0.027*

(0.009, 0.045)

Females

--2

--2

-0.022*

(-0.042, -0.003)

Public facility availability (count/10,000 population)

      

Males

-0.037

(-0.077, 0.004)

0.006

(-0.073, 0.085)

  

Females

0.053*

(0.008, 0.097)

-0.025

(-0.126, 0.076)

  

Alpha Index

--2

--2

-0.006

(-0.101, 0.089)

Median household income

      

Males

--2

--2

0.017

(-0.021, 0.055)

Females

--2

--2

-0.032

(-0.071, 0.007)

Crime

      

Males

-0.099*

(-0.134, -0.065)

-0.135*

(-0.195, -0.075)

--2

Females

-0.043*

(-0.081, -0.005)

-0.079*

(-0.142, -0.015)

--2

  1. 1National Longitudinal Study of Adolescent Health (U.S.; n = 12,701). Estimated from Poisson fixed effects regression modeling MVPA as a function of six natural log-transformed built and socioeconomic environment measures. Fixed effects models adjusted for time varying age and do not estimate parameters for time invariant individual-level variables; random effects models additionally adjusted for sex, race, parental income and education, and region.
  2. 2Estimate for total sample reported if corresponding interaction with residential relocation was not included in the model. Residential relocation was defined as greater than 1/4 mile Euclidean distance (Mover (n = 8,525) and Non-mover (n = 4,176)) between Wave I and III respondent locations. 3- and 2-way interactions between sex, residential relocation status, and environment measures were included if statistically significant (p < 0.1); if a 3-way interaction was significant, all corresponding 2-way interactions were retained.
  3. *Statistically significant elasticity (2-sided p < 0.05)
  4. CI, Confidence Interval; MVPA, moderate-vigorous physical activity (bouts per week)