Database

Search date

Total number of hits

Relevant articles with title and abstract

Full texts retrieved

Number included for appraisal

CINAHL

1/07/12

648

602

181

2

EMBASE

3/07/12

3418

282

48

2

MEDLINE

5/07/12

250

227

227

3

BNI

2/07/12

1099

267

267

0

Backward chaining

1/07/12

2

Total

5415

1378

723

9