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. 2017 Sep 21;2017(9):CD001048. doi: 10.1002/14651858.CD001048.pub5

Smrcka 2005.

Methods Randomised controlled trial, parallel group
Participants Total number of participants: 72
Baseline characteristics:
Baseline characteristics not reported by group. Mean age 41 years; gender M/F: 51/21
Inclusion criteria: Severe brain injury GCS < 8
Exclusion criteria: patients > 60 years of age, those with severe primary brain damage with no possibility of survival (bilateral mydriasis, no reflexes above C1)
Country: Czech Republic
Setting: hospital
Interventions Therapeutic cooling
Number of participants: 35
Method of cooling: surface cooling
Target temperature: 34 °C
Time of cooling: within 15 hours of injury
Duration of cooling: to reach 34 °C within 3 hours of cooling for 72 hours
Rewarming details: passively warmed after 72 hours
Site of measurement: urinary bladder
No cooling
Number of participants: 37
Outcomes Outcomes measured in study: ICP, CCP, jugular bulb oxygen saturation, GOS at 6 months (to include mortality at 6 months)
Notes Funding/declarations of interest: supported by grant from the Internal Grant Agency of the Czech Ministry of Health
Study dates: 2001 to 2003
Risk of bias
Bias Authors' judgement Support for judgement
Random sequence generation (selection bias) Unclear risk Described as randomised; no additional details
Allocation concealment (selection bias) Unclear risk No details
Blinding of participants and personnel (performance bias): mortality Low risk Lack of blinding unlikely to influence performance for this outcome
Blinding of participants and personnel (performance bias): GOS Unclear risk Unclear if lack of blinding likely to influence performance for this outcome
Blinding of outcome assessment (detection bias): mortality; pneumonia Low risk No details; lack of outcome assessor blinding is unlikely to influence outcome data
Blinding of outcome assessment (detection bias): GOS Unclear risk No details
Incomplete outcome data (attrition bias) 
 All outcomes Low risk No apparent losses
Selective reporting (reporting bias) Unclear risk Clinical trials registration or pre‐published protocol not reported. Insufficient information to make judgement
Other bias Low risk No other apparent sources of bias