Code each paper	Author(s)	Journal/conference proceedings etc.	Year
Participant characteristics
		Further details
Age (mean, median, range, etc.)
Sex of participants (numbers/%, etc.)
Disease status/type, etc. (if applicable)
Other
Trial characteristics
		Further details
Single centre/multicentre
Country/countries
How was participant eligibility defined?
How many people were randomized?
Number of participants in each intervention group
Number of participants who received intended treatment
Number of participants who were analysed
Interventions used
Frequency of compressions and ratio of compression to ventilation
Duration of treatment
Median (range) length of follow‐up reported in this paper (state weeks, months or years or if not stated)
Time points when measurements were taken during the study
Time points reported in the study
Time points you are using in RevMan
Trial design (e.g. RCT/quasi‐randomized/cluster‐randomized trials)
Other
Outcomes relevant to our review
	Reported in paper (circle)	Intervention group (n) n = number of participants, not number of events	Control group (n) n = number of participants, not number of events
Outcome 1. Survival to hospital discharge	Yes/No
Outcome 2. Survival to hospital admission	Yes/No
Outcome 3. Survival at one year	Yes/No
Outcome 4. Neurological outcomes at hospital discharge	Yes/No
Outcome 5. Neurological outcomes at one year	Yes/No
Outcome 6. Return of spontaneous circulation	Yes/No
Outcome 7. Quality of life	Yes/No
Other information which you feel is relevant to the results. Indicate if: any data were obtained from the primary author; if results were estimated from graphs etc.; or calculated by you using a formula (this should be stated and the formula given). In general, if results not reported in paper(s) are obtained, this should be made clear here to be cited in review.
Freehand space for writing actions such as contact with study authors and changes.