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Table 2 Mediated effects of changes in environmental perceptions over 3 months on changes in physical activity behaviours

From: The working mechanisms of an environmentally tailored physical activity intervention for older adults: a randomized controlled trial

 

Effect environmental perceptions on outcome, β3 months (SE)

Mediated effect environmental perceptions, αβ3 months (SE)

  

Intervention basic

% ME

Intervention plus

% ME

Total PA day/wk

0.05 (0.03)*

0.00 (0.01)

-

.02 (0.01)‡

4.6

Cycling min/wk

7.26 (2.68)**

0.33 (1.13)

-

2.62 (1.46) ‡

14.5

Walking min/wk

-3.97 (2.60)

-0.18 (.63)

-

-1.43 (1.12)

-

Sports min/wk

9.63 (1.92)***

0.43 (1.49)

-

3.47 (1.61)*

>100

  1. * p < 0.05; ** p < 0.01; *** p < 0.001, ‡ p < 0.10; numbers in bold typeface: significant associations
  2. PA: Physical Activity; SE: Standard Error; %ME: proportion mediated. Regression models were adjusted for age, gender, educational status, occupational status, BMI, baseline levels of outcome, and within- district clustering effects.