Is supported self-management for depression effective for adults in community-based settings in Vietnam?: a modified stepped-wedge cluster randomized controlled trial

Table 6 Sensitivity Analysis of primary results of group comparisons in period 1 to the assumption of data missing at random (MAR)

Month	Missing data percentage in Period 1		SRQ-20 > 7		SRQ-20		WHODAS2.0
Month	Immediate	Delayed	ISNI	TP	ISNI/SD	TP	ISNI/SD	TP
1	17.8% (34/190)	24.8% (46/185)	0.03	4.4	0.28	2.8	0.52	0.2
2	16.3% (31/190)	25.9% (48/185)	0.01	23.4	0.21	6.8	0.44	2.3

Missing data percentage is Mean (n/N) where n is the number of participants completing the outcome assessment and N is the number of participants in the ITT analysis sample
TP (tipping point) = (1-effect estimate− 1.96*standard error)/ISNI [19, 20] for binary outcome SRQ-20 > 7 and TP (Tipping Point) = (Effect estimate − 1.96*standard error)*SD/ISNI [22, 24] for continuous outcome SRQ-20 and WHODAS 2.0
ISN index of sensitivity to non ignorability, SD standard deviation

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