Pilot study of a two-arm non-randomized controlled cluster trial of a psychosocial intervention to improve late life depression in socioeconomically deprived areas of São Paulo, Brazil (PROACTIVE): feasibility study of a psychosocial intervention for late life depression in São Paulo

Table 2 Patient Health Questionnaire-9 (PHQ-9), European Quality of Life 5 Dimensions-5 levels version (EQ-5D-5 L), and Investigating Choice Experiments for the Preferences of Older People-CAPability (ICECAP-O) [Mean (SD)] at baseline and follow-up for the control and intervention arms

Measure	Time Point	Control		Intervention		Total
Measure	Time Point	N	M (SD)	N	M (SD)	N	M (SD)
PHQ-9	Baseline	25	13.9 (3.7)	33	15.5 (3.5)	58	14.8 (3.6)
PHQ-9	Follow-up	23	12.3 (3.7)	31	3.8 (3.9)	54	7.4 (5.7)
EQ-5D-5 L^a	Baseline	25	0.8081 (0.13)	33	0.7127 (0.16)	58	0.7539 (0.15)
EQ-5D-5 L^a	Follow-up	23	0.8202 (0.13)	31	0.8121 (0.14)	54	0.8156 (0.14)
ICECAP-O	Baseline	3^b	0.6631 (0.14)	33	0.5564 (0.18)	36	0.5653 (0.18)
ICECAP-O	Follow-up	23	0.7067 (0.15)	30	0.7328 (0.16)	53	0.7214 (0.15)

^aEQ-5D-5 L and ICECAP-O higher scores represent better outcomes
^bThe ICECAP-O was administered only to a few participants in the control group at baseline because we were initially uncertain of its feasibility for people with low levels of literacy. After testing the questionnaire and concluding that participants could provide a valid response to the ICECAP-O, we collected baseline information with 3 control and all intervention participants

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