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Table 5 The distribution of cerebral performance category score at 1 month and the cause of death

From: Background frequency can enhance the prognostication power of EEG patterns categories in comatose cardiac arrest survivors: a prospective, multicenter, observational cohort study

Variable Total (N = 489) Highly malignant or malignant patterns with delta or undetermined frequency
Yes (N = 239) No (N = 250)
CPC 1 134 (27.4%) 2 (0.8%) 132 (52.8%)
CPC 2 14 (2.9%) 1 (0.4%) 13 (5.2%)
CPC 3 19 (3.9%) 4 (1.7%) 15 (6.0%)
CPC 4 91 (18.6%) 53 (22.2%) 38 (15.2%)
CPC 5 231 (47.2%) 179 (74.9%) 52 (20.8%)
Cause of death    
 Cerebral cause 108 (46.8%) 92 (51.4%) 16 (30.8%)
 Multiple organ failure 68 (29.4%) 47 (26.3%) 21 (40.4%)
 Cardiovascular cause 25 (10.8%) 17 (9.5%) 8 (15.4%)
 Others/ Unknown 30 (13.0%) 23 (12.8%) 7 (13.5%)
Death after awakeninga 6 (2.6%) 0 (0%) 6 (11.5%)
Withholding therapies 52 (10.6%) 42 (17.6%) 10 (4.0%)
 No therapeutic escalation 9 (1.8%) 8 (3.3%) 1 (0.4%)
 No cardiopulmonary resuscitation 41 (8.4%) 32 (13.4%) 9 (3.6%)
Time to withholding of active treatment, hours 82.0 (40.3–118.3) 89.5 (39.5–125.0) 78.0 (35.8–97.0)
  1. Values are expressed as number (%) and median (interquartile range)
  2. CPC, cerebral performance category
  3. aA total of 6 patients were dead after awakening due to cardiovascular cause (n = 2), multiple organ failure (n = 1) and others/unknown cause (n = 3)