Table 6

Unstandardized regression coefficients and P-values for built environment, perceived safety, and their interactions in the SNQLS sample
Outcome variable
Total MVPAa from accelerometers Walking for transportationa Walking for leisurea
n = 687 n = 707 n = 709
ICC = .11b ICC = .31b ICC = .04b
B (95% CI) P-value B (95% CI) P-value B (95% CI) P-value
Walkability iIndex M19 6.03 (2.71, 9.34) .000* M28 9.06 (6.69, 11.42) .000*
 Traffic safety 7.92 (−3.97, 19.82) .191 −3.80 (−12.20, 4.60) .375
 Interaction −3.06 (−7.79, 1.67) .205 −1.07 (−4.42, 2.27) .529
Walkability index M20 5.57 (2.20, 8.94) .001* M29 8.89 (6.51, 11.26) .000*
 Pedestrian safety 14.14 (−4.42, 32.69) .082 6.21 (−6.75, 19.17) .592
 Interaction 0.65 (−6.51, 7.80) .877 2.44 (−2.56, 7.44) .634
Walkability index M21 6.82 (3.36, 10.28) .000* M30 9.46 (6.98, 11.94) .000*
 Crime safety 14.89 (0.12, 29.66) .048* 4.31 (−6.11, 14.74) .417
 Interaction 0.56 (−3.59, 4.71) .674 0.54 (−2.42, 3.51) .721
Parks M22 33.01 (15.76, 50.26) .000* M31 14.52 (−5.14, 34.18) .147
 Traffic safety 6.42 (−5.50, 18.35) .290 9.13 (−4.76, 23.02) .197
 Interaction −12.25 (−36.08, 11.58) .313 −11.65 (−39.31, 16.01) .409
Parks M23 31.64 (15.01, 49.79) .000* M32 13.13 (−6.68, 32.93) .203
 Pedestrian safety 11.74 (−6.73, 29.84) .145 16.36 (−4.92, 37.65) .091
 Interaction 5.59 (−28.82, 43.41) .737 29.85 (−12.38, 72.08) .131
Parks M24 33.28 (16.06, 50.50) .000* M33 15.18 (−4.36, 34.72) .127
 Crime safety 8.44 (−5.91, 22.79) .347 7.03 (−9.61, 23.67) .542
 Interaction 1.35 (−25.90, 28.61) .960 24.38 (−7.27, 56.03) .140
Rec facilities M25 10.20 (−7.57, 27.98) .260 M34 9.22 (−10.71, 29.15) .364
 Traffic safety 7.04 (−5.22, 19.31) .260 8.32 (−5.88, 22.52) .251
 Interaction −7.88 (−32.39, 16.63) .528 −12.02 (−40.44, 16.41) .407
Rec facilities M26 7.24 (−10.58, 25.06) .448 M35 5.05 (−14.73, 24.84) .632
 Pedestrian safety 7.24 (−10.58, 25.06) .026* 27.51 (6.03, 49.00) .010*
 Interaction 19.65 (−18.40, 57.71) .309 60.31 (17.30, 103.32) .014*
Rec facilities M27 9.97 (−7.79, 27.72) .268 M36 9.01 (−10.87, 28.89) .365
 Crime safety 9.24 (−5.37, 23.84) .323 9.39 (−7.45, 26.22) .364
 Interaction −3.57 (−30.80, 23.66) .742 11.04 (−20.36, 42.43) .357

MVPA = moderate to vigorous physical activity.

B = unstandardized regression coefficient.

CI = confidence interval.

ICC = intraclass correlation coefficient assessing proportion of variance between block groups.

M = model number.

aControlling for age, ethnicity, gender, education, marital status, months at address, number of people in the household and number of vehicles per adult.

bICCs are for the empty model containing no independent variables.

*Significant at p < 0.05.

Bracy et al.

Bracy et al. International Journal of Behavioral Nutrition and Physical Activity 2014 11:24   doi:10.1186/1479-5868-11-24

Open Data