Table 3 Key model variables
Parameters | Mean values | Data source and assumptions |
|---|---|---|
Intervention effect estimates | ||
 Difference in mean observations of children, adolescents and adults per day at T1 and T3* | Additional file 1 | Veitch et al. [21] Uncertainty analysis used PERT distributions of observations (Additional file 1) |
 % of people engaged in physical activity from observations of children, adolescents and adults per day at T1 and T3* | Additional file 1 | Veitch et al. [21] Assume one hour duration of activity to convert to a MET-h |
Intervention cost estimate | ||
 Cost of design and construction of play-scape | $1,165,105 | Personal communication Parks Victoria. 2014 costs converted to 2017 using CPI [33] |
 Annual maintenance | $12,700 | |
 Life of playground | 20 years | Assume 20 years (varied in sensitivity analysis) |
Control cost estimate | ||
 Annual maintenance | $5000 | Personal communication Parks Victoria |
Sensitivity analysis | ||
 Difference in mean observations of children, adolescents and adults per day between T2 and T1 | Additional file 1 | Veitch et al. [21] Uncertainty analysis used PERT distributions of observations (Additional file 1) |
 Life of playground | 10 and 15 years | Varied for less conservative estimates |