Table 3.
Results of Primary Analyses for MVPA as a Mediator Relating Peer Social Support for PA and Neighborhood Walkability with SBP and DBP (N = 434).
| Variable | B | SE | t | p | LCL | UCL | R 2 |
|---|---|---|---|---|---|---|---|
| MVPA (M1) on Peer Support and Walkability with Control Variables | |||||||
| Intercept (I1) | 54.81 | 8.88 | 6.17 | .00 | 37.19 | 72.19 | |
| Age (C1) | -.37 | .10 | -3.88 | .00 | -.55 | -.18 | |
| Sex (C2) | -19.32 | 2.99 | -6.47 | .00 | -25.14 | -13.54 | |
| BP Med Status (C3) | -3.03 | 2.65 | -1.14 | .25 | -8.17 | 2.24 | .350 |
| BMI (C4) | -.54 | .12 | -4.45 | .00 | -.78 | -.31 | |
| Community (C5) | 1.68 | 1.52 | 1.11 | .27 | -1.16 | 4.76 | |
| Peer Support (X1) | 2.40 | 1.06 | 2.26 | .02 | .22 | 4.47 | |
| Walkability (X2) | 2.43 | 1.22 | 1.99 | .05 | .02 | 4.79 | |
|
SBP (Y1) on PA, Peer Support and Walkability with Control Variables | |||||||
| Intercept (I1) | 113.55 | 6.53 | 17.39 | .00 | 100.93 | 126.91 | |
| Age (C1) | .28 | .07 | 4.24 | .00 | .14 | .40 | |
| Sex (C2) | -4.31 | 2.02 | -2.13 | .03 | -8.41 | -.50 | |
| BP Med Status (C3) | 3.30 | 2.31 | 1.43 | .15 | -1.20 | 7.93 | |
| BMI (C4) | .28 | .11 | 2.49 | .01 | .07 | .51 | .122 |
| Community (C5) | -.53 | 1.09 | -.49 | .62 | -2.60 | 1.65 | |
| PA (M1) | -.03 | .04 | -.68 | .49 | -.11 | .05 | |
| Peer Support (X1) | -.33 | .81 | -.40 | .69 | -1.91 | 1.23 | |
| Walkability (X2) | -.14 | .98 | -.15 | .88 | -2.05 | 1.81 | |
|
DBP on PA, Peer Support and Walkability with Control Variables | |||||||
| Intercept (I1) | 83.08 | 3.83 | 21.70 | .00 | 75.48 | 90.37 | |
| Age (C1) | .02 | .04 | .37 | .71 | -.07 | .10 | |
| Sex (C2) | -2.40 | 1.34 | -1.80 | .07 | -5.09 | .31 | |
| BP Med Status (C3) | .70 | 1.45 | .48 | .63 | -2.09 | 3.47 | |
| BMI (C4) | .04 | .07 | .52 | .61 | -.09 | .17 | .022 |
| Community (C5) | -1.27 | .68 | -1.86 | .06 | -2.56 | .17 | |
| PA (M1) | -.01 | .03 | -.33 | .74 | -.07 | .05 | |
| Peer Support (X1) | -.06 | .53 | -.12 | .91 | -1.14 | .98 | |
| Walkability (X2) | .18 | .64 | .28 | .78 | -1.05 | 1.41 | |
Note: MVPA= accelerometry-estimated physical activity; SBP=systolic blood pressure; DBP=diastolic blood pressure; BMI=body mass index; SE=standard error; DF=degrees of freedom; LCL=lower confidence limit; UCL=upper confidence limit; Mediated indirect (αβ) and direct (τ’) effects not shown; all effects were non-significant with r2<.001.
* = p < .05, ** = p < .01
aValues of r2 are based on semi-partial correlations and thus represent the amount of variance in an outcome accounted for by a predictor, exclusive of overlap with other predictors.