Table 1 Demographics and pre-event characteristics by systolic and diastolic blood pressure thresholds at 0–6 h post-arrest
|  | Post-arrest systolic BP (0–6 h)a | P value | Post-arrest diastolic BP (0–6 h)a | P value | ||
|---|---|---|---|---|---|---|
 > 10th percentile (N = 352) |  < 10th percentile (N = 341) |  > 50th percentile (N = 346) |  < 50th percentile (N = 347) | |||
Demographics | ||||||
 Age |  |  |  < .001c |  |  |  < .001c |
  ≤ 1 month | 27 (7.7%) | 74 (21.7%) |  | 63 (18.2%) | 38 (11.0%) |  |
  1 month–< 1 year | 174 (49.4%) | 133 (39.0%) |  | 193 (55.8%) | 114 (32.9%) |  |
  1 year–< 8 years | 108 (30.7%) | 70 (20.5%) |  | 67 (19.4%) | 111 (32.0%) |  |
  8 years–< 19 years | 43 (12.2%) | 64 (18.8%) |  | 23 (6.6%) | 84 (24.2%) |  |
 Male | 199 (56.5%) | 175 (51.3%) | 0.171c | 191 (55.2%) | 183 (52.7%) | 0.542c |
 Race |  |  | 0.017c |  |  | 0.812c |
  White | 156 (44.3%) | 172 (50.4%) |  | 158 (45.7%) | 170 (49.0%) |  |
  Black or African American | 106 (30.1%) | 68 (19.9%) |  | 87 (25.1%) | 87 (25.1%) |  |
  Other | 25 (7.1%) | 22 (6.5%) |  | 21 (6.1%) | 26 (7.5%) |  |
  Unknown or not reported | 65 (18.5%) | 79 (23.2%) |  | 80 (23.1%) | 64 (18.4%) |  |
 Hispanic or Latino | 51 (14.5%) | 55 (16.1%) | 0.396c | 59 (17.1%) | 47 (13.5%) | 0.287c |
Pre-existing medical conditions | ||||||
 Respiratory insufficiency | 319 (90.6%) | 289 (84.8%) | 0.020c | 310 (89.6%) | 298 (85.9%) | 0.164c |
 Hypotension | 154 (43.8%) | 221 (64.8%) |  < .001c | 182 (52.6%) | 193 (55.6%) | 0.446c |
 Congestive heart failure | 34 (9.7%) | 28 (8.2%) | 0.510c | 31 (9.0%) | 31 (8.9%) | 1.000c |
 Pneumonia | 58 (16.5%) | 35 (10.3%) | 0.019c | 45 (13.0%) | 48 (13.8%) | 0.824c |
 Sepsis | 44 (12.5%) | 53 (15.5%) | 0.274c | 33 (9.5%) | 64 (18.4%) |  < .001c |
 Renal insufficiency | 33 (9.4%) | 46 (13.5%) | 0.095c | 21 (6.1%) | 58 (16.7%) |  < .001c |
 Congenital heart disease | 175 (49.7%) | 210 (61.6%) | 0.002c | 215 (62.1%) | 170 (49.0%) |  < .001c |
Pre-event characteristics | ||||||
 Illness category |  |  |  < .001c |  |  | 0.003c |
  Medical cardiac | 76 (21.6%) | 75 (22.0%) |  | 89 (25.7%) | 62 (17.9%) |  |
  Medical non-cardiac | 159 (45.2%) | 111 (32.6%) |  | 123 (35.5%) | 147 (42.4%) |  |
  Surgical cardiac | 87 (24.7%) | 129 (37.8%) |  | 115 (33.2%) | 101 (29.1%) |  |
  Surgical non-cardiac or trauma | 30 (8.5%) | 26 (7.6%) |  | 19 (5.5%) | 37 (10.7%) |  |
 Baseline Pediatric Cerebral Performance Categoryb |  |  | 0.828d |  |  |  < .001d |
  1—Normal | 208 (59.1%) | 206 (60.4%) |  | 231 (66.8%) | 183 (52.7%) |  |
  2—Mild disability | 59 (16.8%) | 53 (15.5%) |  | 55 (15.9%) | 57 (16.4%) |  |
  3—Moderate disability | 46 (13.1%) | 41 (12.0%) |  | 38 (11.0%) | 49 (14.1%) |  |
  4—Severe disability | 35 (9.9%) | 38 (11.1%) |  | 19 (5.5%) | 54 (15.6%) |  |
  5—Coma/vegetative state | 4 (1.1%) | 3 (0.9%) |  | 3 (0.9%) | 4 (1.2%) |  |