Table 2:

Mental Health Characteristics of Study Population by Research Opt-in Status

	All Subjects (N=199)	Opt-in (N=154)	Opt-out (N=45)	P-value*
Prior psychiatric hospitalization	48 (24.1%)	39 (25.3%)	9 (20.0%)	0.46
Current treatment by psychiatrist or therapist?	61 (30.7%)	51 (33.1%)	10 (22.2%)	0.16
Currently on antidepressant medication?**	87 (43.7%)	75 (48.7%)	12 (26.7%)	0.009
GAD-7 anxiety score (mean SD)	12.6 ± 4.5	12.7 ± 4.5	12.2 ± 4.5	0.44
Positive anxiety screen (GAD-7 ≥10)	154 (77.4%)	120 (77.9%)	34 (75.6%)	0.74
NDDI-E depression score (mean SD)	16.0 ± 3.6	16.4 ± 3.5	14.7 ± 3.8	0.007
Positive depression screen (NDDI-E ≥16)	128 (64.3%)	105 (68.2%)	23 (51.1%)	0.04
Passive suicidality screen positive (NDDI-E)***	34 (17.1%)	29 (18.8%)	5 (11.1%)	0.23
Irritability screen positive (SCID-IV or MINI-IV past manic episode screen) [N=198]	102 (51.5%)	86 (56.2%)	16 (35.6%)	0.01
Elevated mood screen positive (SCID-IV or MINI-IV past manic episode screen) [N=198]	58 (29.3%)	50 (32.7%)	8 (17.8%)	0.05
Past manic episode (MINI-IV past manic episode module)				0.52
Yes	17 (8.5%)	15 (9.7%)	2 (4.4%)
No	159 (79.9%)	121 (78.6%)	38 (84.4%)
Uncertain	23 (11.6%)	18 (11.7%)	5 (11.1%)
Visual hallucinations (in past month)	22 (11.1%)	19 (12.3%)	3 (6.7%)	0.29
Auditory hallucinations(in past month) [N=198]				0.87
Auditory-tones	22 (11.1%)	17 (11.1%)	5 (11.1%)
Auditory-voices	12 (6.1%)	10 (6.5%)	2 (4.4%)
No auditory hallucinations	164 (82.8%)	126 (82.4%)	38 (84.4%)

^*two-sample t-test or chi square test; chi square p value shown at top of category label for categorical variables having more than 2 categories

^**SSRI, SNRI, mirtazapine, bupropion, or buspirone

^***positive passive suicidality screen: response of 3 or 4 (“sometimes” or “always or often” on item 4 of the NDDI-E “I’d be better off dead”)[34]