Table 1 Database search terms

PubMed/Medline

1. Randomized controlled trial.pt.

2. Controlled clinical trial.pt.

3. Randomized.ab.

4. Placebo.ab.

5. Drugtherapy.fs.

6. Randomly.ab.

7. Trial.ab.

8. Groups.ab.

9. 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8

10. Exp animals/not humans.sh.

11. 9 not 10

12. (cluster$ adj6 randomi$).mp.

13. ((communit$ adj6 intervention$) or (communit$ adj6 randomi$)).mp.

14. group$ randomi$.mp.

15. cluster-randomi$.mp.

16. 12 or 13 or 14 or 15

17. 11 or 16

18. ((direct$ adj6 observ$) or (treat$ adj6 partner$) or (treat$ adj6 support$) or (patient$ adj6 support$) or (patient$ adj6 select$) or (peer adj6 health$) or (peer$ adj6 deliver$)).mp.

19. (Home based care or (facilit$ adj6 base$)).mp.

20. 18 or 19

21. Exp antiretroviral therapy, highly active/

22. Hiv treatment.mp.

23. Hiv care.mp.

24. 21 or 22 or 23

25. ((viral load) or (HIV viral load) or (virologic$ adj6 fail$) or (virologic$ adj6 outcome$) or (treat$ adj6 fail$) or (treat$ adj6 success$)).mp.

26. 24 or 25

27. 20 and 26

28. 17 and 27

29. Exp africa/

30. 28 and 29

EMBASE

1. Double-blind:.mp. or placebo.tw. or blind:.tw.

2. (Cluster: adj6 randomi:).mp.

3. ((communit: adj6 intervention:) or (communit: adj6 randomi:)).mp.

4. Group: randomi:.mp.

5. Cluster-randomi:.mp.

6. 2 or 3 or 4 or 5

7. 1 or 6

8. ((direct: adj6 observ:) or (treat: adj6 partner:) or (treat: adj6 support:) or (patient: adj6 support:) or (patient: adj6 select:) or (peer adj6 health:) or (peer: adj6 deliver:)).mp.

9. (Home based care or (facility: adj6 base:)).mp.

10. 8 or 9

11. Exp antiretroviral therapy, highly active/

12. Hiv treatment.mp.

13. Hiv care.mp.

14. 11 or 12 or 13

15. ((viral load) or (HIV viral load) or (virologic: adj6 fail:) or (virologic: adj6 outcome:) or (treat: adj6 fail:) or (treat: adj6 success:)).mp.

16. 14 or 15

17. 10 and 16

18. 7 and 17

19. exp africa/

20. 18 and 19