Table 2.

The rules for “Activity Level” feature creation based on standard guidelines for activity level classification⁵.

Activity level	Rule*	Score
Sedentary	((Steps < 5000) ∧ (VPA*2 + MPA) *7 < 90 ∧ LPA ≥ 0)) ∨ (Steps < 5000)	0
Low active	((Steps > 4999) ∧ (VPA*2 + MPA) *7 ≥ 90 ∧ (VPA*2 + MPA) *7 < 210) ∨ (Steps > 4999 ∧ Steps < 7500)	1
Active	((Steps > 4999) ∧ (VPA*2 + MPA) *7 ≥ 210 ∧ (VPA*2 + MPA) *7 < 300) ∨ (Steps > 7499 ∧ Steps < 10,000)	2
Medium active	((Steps > 4999) ∧ (VPA*2 + MPA) *7 ≥ 300 ∧ (VPA*2 + MPA) *7 < 360)) ∨ (Steps > 9999 ∧ Steps < 12,500)	3
Highly active	((Steps > 4999) ∧ (VPA*2 + MPA) *7 ≥ 360) ∨ (Steps > 12,499)	4

*MPA = 2VPA.