Table 1.

Results of Different Phases of the Search Process

Database	Total in Each Database	Selection Based on Title Reading	Selection Based on Abstract Reading	Selection Based on Full-Text Reading/Appraisal
CINAHL	1012	14	4	2
PubMed [including Medline]	2283	13	4	3
Scopus	570	6	2	1
Web of Science	172	11	4	4
Manual search/backtracking references	0	0	0	0
Total of databases	4037	44	14	10