Table 1 Descriptive statistics of socio-demographic characteristics and other covariates (N = 1299)

Sociodemographic characteristics and other covariates

%

Adolescent’s sex (female)

57.04

Mean (SD)

Median (IQR)

Adolescent’s age (years)^P

14.70 (1.57)

Parental self-selection of the neighbourhood ^P [1–5]^a

3.38 (0.74)

Social desirability^A [0–9]

4.65 (2.15)

Length of residence at current address^P (years)

9.68 (6.62)

10 (10.00)

Number of children in the household^P

1.66 (0.75)

Number of motorised vehicles in the household^P

%

n

 0

69

898

 1

23

298

 2 or more

8

103

Monthly household income (HKD)^P

  < 15,000

29

380

 15,000 – 29,999

30

390

 30,000 – 59,999

19

248

  ≥ 60,000

22

281

Attend private school^P

4.4

57

Neighbourhood stratification

n

 high walkable/high income

321

 high walkable/low income

345

 low walkable/low income

341

 low walkable/low income

356