Additional file 2: of The role of total cell-free DNA in predicting outcomes among trauma patients in the intensive care unit: a systematic review

CfDNA measurement results. Results of cfDNA assessment checkpoints for each study. One point was given for if circulating DNA was analyzed in plasma. One point was given if blood was collected in either an EDTA tube or cell-free DNA tube. One point was given if blood was processed before 4 h. One point was given if blood was centrifuged one or more times. One point was given if blood was frozen at –80 °C or –20 °C depending on whether cfDNA analysis was based on specific sequence or cfDNA quantification, respectively. GAPDH glyceraldehyde 3-phosphate dehydrogenase, NADH nicotinamide adenine dinucleotide. (DOCX 25 kb