1. Identification Screening Eligibility Included Included
SEARCH PROCESS 1: CCDAN registers
CCDANCTR-STUDIES =
CCDANCTR-References =
(Unique records)
SEARCH PROCESS 2: Other databases
Total =
SEARCH PROCESS 3: Additional resources
(Unique records)
Identification
SCREENING: no. of records screened after de-duplication
1a =
1b =
2 =
3 =
Records excluded:
Screening
ELIGIBILITY: no. of full-text articles assessed
1a =
1b =
2 =
3 =
Eligibility
Records excluded:
Included
INCLUDED STUDIES: no. of studies included in qualitative analysis
1a =
1b =
2 =
3 =
Included
INCLUDED STUDIES: no. of studies included in meta-analysis