. Author manuscript; available in PMC: 2017 Jun 1.

Published in final edited form as: Pervasive Mob Comput. 2016 Jun;28:51–68. doi: 10.1016/j.pmcj.2015.09.007

Algorithm 4.

Behavior And Health Correlation(t)

1:	// t = testing time points
2:	// Return correlation coefficient
3:	Behavior Change Scores = []
4:	Clinical Change Scores = []
5:	i = 0
6:	repeat
7:	Σ_i = Aggregate Activity Curves At Time(t_i + 3 months)
8:	Σ_i+1 = Aggregate Activity Curves At Time(t_i+1 − 3 months)
9:	Dîst = Empirical Distribution(Σ_i, Σ_i+1, N_P)
10:	S₁ = PCAR (Σ_i, Σ_i+1, Dîst)
11:	S₂ = Clinical Scores(t_i, t_i+1)
12:	Append(S₁, Behavior Changes Scores)
13:	Append(S₂, Clinical Changes Scores)
14:	i = i + 1
15:	until
16:	return Correlation(S₁, S₂)