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. 2014 Jan 8;9(1):e84336. doi: 10.1371/journal.pone.0084336

Table 1. Categorisation of study characteristics.

Characteristic Registered label Categories for analysis
Study Designs Randomised, Non-Randomised Randomised, Non-Randomised
Age Groups Child Paediatric
Adult, Adult|Senior Adult
Child|Adult, Child|Adult|Senior Both
Interventions Categories were: ‘Drug’, ‘Device’, ‘Behaviour’, ‘Procedure’, ‘Other’ followed by a freetext description Drug (includes blood products, intravenous fluid preparations)
Device (includes non-invasive brain stimulation)
Cognitive/Behaviour therapies
Non-cognitive/behavioural therapies e.g. physiotherapy, treadmill training
Procedure (includes surgical procedures)
Protocol (includes educational measures)
Severity (TBI studies only) n/a Manual checking in inclusion criteria
Phases (only analysed for drug studies) 0, 1, 2, 3, 4, more than one phase noted 0, 1, 2, 3, 4, mixed phase
Location (manual checking of each study webpage) n/a Single Centre
Multi-centre (same country)
International