Skip to main content

Table 1 Table summarising the electronic information sources used and the number of records identified

From: Systematic review of outcome domains and instruments used in designs of clinical trials for interventions that seek to restore bilateral and binaural hearing in adults with unilateral severe to profound sensorineural hearing loss (‘single-sided deafness’)

Type of electronic search

Database

Date range

Number of items (n)

Academic databases

Excerpta Medica dataBASE (EMBASE) via OvidSP

1974 to 18th March 2020

1463

Medical Literature Analysis and Retrieval System Online (MEDLINE) via OvidSP

1974 to 18th March 2020

1144

PubMed National Centre for Biotechnology Information

1946 to 18th March 2020

1223

Cumulative Index of Nursing and Allied Health Literature (CINAHL) via EBSCO

1982 to 18th March 2020

384

  

Searched on

 

Clinical trial registers and/or other sources

ClinicalTrials.gov (www.clinicaltrials.gov)

18th March 2020

193

International Standard Randomised Controlled Trials Number (ISRCTN) Registry (www.isrctn.com)

18th March 2020

48

Cochrane Central Register of Controlled Trials (CENTRAL)

18th March 2020

962

World Health Organization (WHO) International Clinical Trials Registry Platform (ICTRP) (www.who.int/ictrp)

18th March 2020

270

NIHR UK Clinical Trials Gateway (www.ukctg.nihr.ac.uk)

18th March 2020

67