Table 2

Databases searched

Cochrane Central Register of Controlled Trial

Current Controlled trials




CINAHL (Cumulative Index to Nursing and Allied Health Literature)

SIGLE (Grey Literature in Europe)

ISTP (Index to Scientific and Technical Proceedings)

INSIDE (BL database of Conference Proceedings and Journals)

Aslib Index to Theses (UK and Ireland theses)

Dissertation Abstract (USA)

ADEAR (Alzheimer's Disease Clinical Trials Database)

Alzheimer Society

South Australian Network for Research on Ageing

US Dept of Veterans Affairs Cooperative Studies

National Institutes of Health (NIH)


Schering Health Care Ltd

Hong Kong Health Services Research Fund

Medical Research Council (MRC)

National Research Register

NHS R&D Health Technology Assessment Programme

LILACS:Latin American and Carribbean Health Science Literature

Thompson et al. BMC Geriatrics 2007 7:18   doi:10.1186/1471-2318-7-18

Open Data