Table 8.

Mixed regression models regarding smartphone-based data and affective states (euthymia vs depressive/mixed/manic states) in patients with bipolar disorder assessed with the Hamilton Depression Rating Scale and Young Mania Rating Scale.

Daily variable	Euthymia versus depression/mania/mixed state
	Regression coefficient (β)	P value	95% CI	Observations (n)	Patients (n)
Number of incoming answered calls	–.101	.002	–0.164 to –0.038	982	51
Duration of incoming calls (s/call)	.000	.29	0 to 0.001	820	50
Standard deviation of duration of incoming calls (s)	.001	.24	0 to 0.001	600	48
Number of outgoing calls	–.005	.55	–0.022 to 0.012	982	51
Fraction of outgoing calls	1.211	.01	0.244 to 2.179	886	51
Duration of outgoing calls (s)	.001	.07	0 to 0.002	886	51
Standard deviation of duration of outgoing calls (s)	.0004	.34	0 to 0.001	756	48
Number of missed calls	.0496	.24	–0.033 to 0.132	982	51
Fraction of missed calls	4.494	<.001	4.492 to 4.496	582	50
Number of sent text messages	.023	.01	0.006 to 0.041	982	51
Mean length of text messages (number of characters)	.010	.04	0 to 0.02	343	38
Self-assessment of sleep time (h)	–.261	.03	–0.493 to –0.03	270	39
Self-assessment of mood	–.551	.003	–0.913 to –0.189	268	42