Table 1 Characteristics of the study participants by wave, 2012–2014 (n = 2260)
| Â | Wave 1 | Wave 2 | Wave 3 | % Missing |
|---|---|---|---|---|
Exposures | ||||
 Perceived bus stop proximity |  |  |  | 10.4 |
  % Further away | 25.5 | 20.7 | 18.8 |  |
  % 1–5 min | 74.5 | 79.3 | 81.2 |  |
 Perceived traffic safety |  |  |  | 13.4 |
  % Low | 10.5 | 10.4 | 9.9 |  |
  % Medium | 31.3 | 35.4 | 34.0 |  |
  % High | 58.2 | 54.2 | 56.1 |  |
 Perceived street connectivity |  |  |  | 18.8 |
  % Low | 22.1 | 20.1 | 19.8 |  |
  % Medium | 56.8 | 56.7 | 59.6 |  |
  % High | 21.1 | 23.2 | 20.6 |  |
 Enjoyment of neighbourhood for walking/cycling |  |  |  | 12.6 |
  % Strongly/slightly disagree | 23.5 | 25.6 | 25.5 |  |
  % Slightly agree | 33.8 | 39.2 | 43.0 |  |
  % Strongly agree | 42.7 | 35.2 | 31.5 |  |
 Feeling safe (personal safety) |  |  |  | 15.1 |
  % Strongly disagree | 10.1 | 10.3 | 9.4 |  |
  % Slightly disagree | 16.8 | 15.3 | 15.6 |  |
  % Neither agree nor disagree | 24.0 | 23.5 | 22.6 |  |
  % Slightly agree | 23.6 | 25.2 | 27.2 |  |
  % Strongly agree | 25.6 | 25.8 | 25.3 |  |
Outcomes | ||||
 % walking to school | 77.5 | 76.5 | 76.0 | 4.9 |
 % walking for leisure | 40.1 | 34.3 | 29.9 | 10.0 |
 % reporting outdoor physical activity | 79.3 | 76.0 | 70.0 | 14.5 |
Covariates | ||||
 % Girls | 43.6 | – | – | 0.0 |
 Ethnicity |  |  |  | 0.0 |
  % White: British | 16.9 | – | – |  |
  % White: Mixed | 8.4 | – | – |  |
  % Asian: Indian | 3.8 | – | – |  |
  % Asian: Pakistani | 3.8 | – | – |  |
  % Asian: Bangladeshi | 14.9 | – | – |  |
  % Black: Caribbean | 4.9 | – | – |  |
  % Black: African | 11.1 | – | – |  |
  % Other | 36.2 | – | – |  |
 % with health condition | 42.4 | 39.3 | 41.0 | 10.9 |
 % receiving free school meals at wave 1 | 37.7 | – | – | 2.0 |
 Family affluence |  |  |  | 3.9 |
  % Low | 10.7 | 7.0 | 5.0 |  |
  % Medium | 53.3 | 50.6 | 51.1 |  |
  % High | 36.0 | 42.4 | 43.9 |  |