Table 6.

Mixed regression models regarding behavioral smartphone-based data and affective states (euthymia, depression, and mania) in patients with bipolar disorder assessed with the Hamilton Depression Rating Scale and Young Mania Rating Scale.

Daily variable	Euthymia versus depression					Euthymia versus mania
	Regression coefficient (β)	P value	95% CI	Observations (n)	Patients (n)	Regression coefficient (β)	P value	95% CI	Patient days (n)	Patients (n)
Number of incoming answered calls	−.15	.01	−0.243 to −0.056	789	46	.024	.71	−0.103 to 0.152	567	41
Duration of incoming calls (s/call)	0	.41	0 to 0.001	664	46	−.001	.59	−0.004 to 0.002	488	39
Standard deviation of duration of incoming calls (s)	0	.45	−0.001 to 0.001	490	44	−.001	.41	−0.005 to 0.002	375	36
Number of outgoing calls	−.064	.01	−0.113 to −0.014	789	46	.044	.16	−0.018 to 0.106	567	41
Fraction of outgoing calls	1	.09	−0.151 to 2.152	715	46	2.73	.03	0.223 to 5.237	526	41
Duration of outgoing calls (s)	.001	.31	−0.001 to 0.002	715	46	0	.88	−0.003 to 0.003	526	41
Standard deviation of duration of outgoing calls (s)	0	.95	−0.001 to 0.001	603	42	−.002	.31	−0.006 to 0.002	463	41
Number of missed calls	−.017	.77	−0.132 to 0.098	789	46	−.03	.76	−0.227 to 0.167	567	41
Fraction of missed calls	4.431	<.001	2.12 to 6.742	463	45	1.912	.38	−2.335 to 6.158	345	40
Number of sent text messages	.001	.94	−0.036 to 0.039	789	46	.015	.69	−0.06 to 0.09	567	41
Mean length of text messages (number of characters)	.001	.91	−0.016 to 0.018	265	28	.014	.08	−0.002 to 0.029	192	28
Self-assessment of sleep time (h)	−.254	.08	−0.538 to 0.03	219	33	−.548	.19	−1.369 to 0.273	147	30
Self-assessment of mood	−2.056	<.001	−2.058 to −2.055	224	35	.676	.22	−0.406 to 1.758	144	31