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Table 1 Studies searches according to database, terms and quantity of returned studies

From: Augmentative and alternative communication in children with Down’s syndrome: a systematic review

Database

Search terms

Articles returned, n

1st search in Web of Science

Topic: (assistive technology AND syndrome) AND (language:(“English”) AND type:(“article”)

45

2nd search in Web of Science

Topic: (assistive technology AND down syndrome) AND (language:(“English”) AND type:(“article”)

4

3rd search in Web of Science

Topic: (down syndrome AND augmentative and alternative communication) AND (language:(“English”) AND type:(“article”)

17

1st search in PubMed

(Search details): (assistive technology [All Fields] AND syndrome [All Fields])

218

2nd search in PubMed

(Search details): (assistive technology [All Fields] AND down syndrome [All Fields])

25

3rd search in PubMed

(Search details): (down syndrome [All Fields] AND augmentative and alternative communication [All Fields])

20

1st search in PsycInfo

Any Field: augmentative AND Any Field: alternative communication AND Any Field: “down syndrome”

0

2nd search in PsycInfo

Any Field: assistive technology AND Any Field: “down syndrome”

0

3rd search in PsycInfo

Any Field: assistive technology AND Any Field: syndrome

56

1st search in BVS

All fields: assistive technology AND syndrome

655

2nd search in BVS

All fields: assistive technology AND down syndrome

14

3rd search in BVS

All fields: down syndrome AND augmentative AND alternative communication

33