Table 2.

Process evaluation timeline POWER@MS2

Category of participants	Measurement time points
	Screening	Baseline
Month	v-1	v0	v1	v2	v3	v4	v5	v6	v7	v8	vx
	−1	0	3	6	9	12	15	18	21	24	X
Non-participation study centres	×
Centres structures/processes	×
Evaluation neurologists		×		×				×
Evaluation study nurses				×				×
Evaluation trained MS nurse				×				×
Non-participation PwMS	×	(×)	(×)	(×)	(×)	(×)	(×)	(×)	(×)	(×)	(×)
Evaluation PwMS		×	×			×				×	×
Evaluation dropouts		(×)	(×)	(×)	(×)	(×)	(×)	(×)	(×)	(×)	(×)
Evaluation stakeholders		×

(×), optional visits; MS, multiple sclerosis; PwMS, people with multiple sclerosis; v₀, visit directly after enrolment; v_-1, visit before enrolment; v₁, visit in month 3; v₂, visit in month 6; v₃, visit in month 9; v₄, visit in month 12; v₅, visit in month 15; v₆, visit in month 18; v₇, visit in month 21; v₈, visit in month 24; v_x, visit after the final participant reaches v₄ (all participants, who have not reached v₈).