Fig. 2

Pruned tree for physical environmental intervention with moderator variable “Working overtime” with two leaves (File ‘Fig. 2 pruned.png’). Legend: Pruned tree involving the variable Working overtime and a split point at 2.25 h indicating that office workers who worked fewer hours overtime (≤ 2.25) had a better outcome with the physical environmental intervention than without the physical environmental intervention (Leaf 1) and office workers who worked more hours overtime (> 2.25) had a worse outcome with the physical environmental intervention than without (Leaf 2)