Table 2.

Linear mixed effects regression results showing significant relationships between disease severity groups and battery percentage trajectories throughout the day.

	β (95% CI)	P value
Baseline age	.06 (.00 to .13)	.047
Sex (reference: female)	−.03 (−.14 to .08)	.62
Smartphone type (reference: Android)	.01 (−.11 to .12)	.89
Estimated smartphone age	−.04 (−.08 to −.01)	.03
Time of day (linear)	1.74 (1.66 to 1.83)	<.001
Time of day (quadratic)	−5.27 (−5.45 to −5.09)	<.001
Time of day (cubic)	3.28 (3.17 to 3.40)	<.001
Prodromal (reference: normal)	.24 (.10 to .39)	.001
Symptomatic (reference: normal)	.27 (.11 to .43)	.001
Time of day (linear)×prodromal	−.23 (−.40 to −.07)	.006
Time of day (linear)×symptomatic	−.56 (−.73 to −.38)	<.001
Time of day (quadratic)×prodromal	.88 (.53 to 1.24)	<.001
Time of day (quadratic)×symptomatic	1.65 (1.29 to 2.01)	<.001
Time of day (cubic)×prodromal	−.58 (−.81 to −.36)	<.001
Time of day (cubic)×symptomatic	−.99 (−1.22 to −.76)	<.001