Table 2.

Methods and professionals involved in the LTFU patients’ reengagement

Intervention/Professional	Description (reference)	n (%)
Identification of LTFU and contacting method	- Distribution of flyers/brochures distributed to participants (29,38,44)	3 (10)
	- Coordination with other services (i.e. jails, pharmacies, hospitalization units) [25, 27, 28, 37, 38, 49]	6 (21)
	- Sending messages and contacting close relatives [24, 25, 30]	3 (11)
	- Home/field visit to the last known address [23–26, 28, 31–33, 48]	9 (32)
	- Internet searches and/or secondary database searches [25–28, 32, 33, 41, 45, 47–49]	11 (39)
	- Listing patients who meet LTFU criteria [23, 27, 30, 32, 34–37, 40, 41, 47, 50]	12 (43)
	- Post-mail letter/email [23–26, 28, 31, 34, 35, 40, 41, 43, 48, 49]	13 (46)
	- Use of electronic databases to confirm status [23–28, 30–36, 39–42, 45–50]	23 (82)
	- Calling patients by phone [23–38, 40–43, 46, 48–50]	23 (82)
Professionals involved (as reported in the records found)	- Nurses [50]	1 (4)
	- Social workers [30, 46]	2 (7)
	- Outreach coordinator [24, 43]	2 (8)
	- Peer mentor/partner advocates [29, 38, 48]	3 (8)
	- Disease intervention/linkage specialist [25, 28, 31, 41, 51]*	5 (21)
	- Not specified [35, 36, 40, 42, 44, 49]	6 (21)
	- Counsellors/patients navigators/field workers [23, 26, 27, 32–34, 37, 43, 47]	9 (24)

* In some cases, reengagement activities were shared among DIS and other professionals like Social Workers