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Table 1 Comparison of demographic characteristics and variables by age groups

From: Validation of age-specific survival prediction in pediatric patients with blunt trauma using trauma and injury severity score methodology: a ten-year Nationwide observational study

Variables Totaln = 17,745 Neonates / Infants n = 330 Preschool children n = 2183 School children n = 5950 Adolescents n = 9282 P value
Age, years (median IQR) 13 (8–17) 0 (0–0) 3 (2–4) 9 (7–-11) 16 (15–17) <.001
Male, n (%) 12,905 (73) 219 (66) 1398 (64) 4264 (72) 7024 (76) <.001
Injury region, n (%)
 Head injury with AIS ≥ 3 6010 (34) 266 (81) 856 (39) 1987 (33) 2901 (31) <.001
 Facial injury with AIS ≥ 3 173 (1) 0 12 (0.6) 43 (0.7) 118 (1) <.001
 Neck injury with AIS ≥ 3 20 (0.1) 0 3 (0.1) 3 (0.1) 14 (0.2) 0.291
 Chest injury with AIS ≥ 3 3339 (19) 10 (3) 349 (16) 862 (14) 2118 (23) <.001
 Abdominal and pelvic injury with AIS ≥ 3 1435 (8) 3 (0.9) 86 (4) 468 (8) 788 (8) <.001
 Spinal injury with AIS ≥ 3 744 (4) 1 (0.3) 26 (1) 85 (1) 632 (7) <.001
 Upper extremity injury with AIS ≥ 3 1610 (9) 0 213 (10) 846 (14) 551 (6) <.001
 Lower extremity injury with AIS ≥ 3 2733 (15) 13 (4) 233 (11) 828 (14) 1659 (18) <.001
Injury Severity Score, (median IQR) 10 (6–17) 16 (9–17) 9 (5–17) 9 (8–16) 10 (6–19) <.001
Revised Trauma Score, (median IQR) 7.84 (7.55–7.84) 7.55 (6.61–7.55) 7.55 (6.90–7.84) 7.84 (7.55–7.84) 7.84 (7.55–7.84) <.001
Survival probability, (median IQR) 0.99 (0.98–0.99) 0.98 (0.95–0.99) 0.99 (0.98–0.99) 0.99 (0.99–0.99) 0.99 (0.98–0.99) <.001
 Survival probability 0.96–1.00, n (%) 15,258 (86) 238 (72) 1882 (86) 5325 (90) 7813 (84) <.001
 Survival probability 0.91–0.95, n (%) 937 (5) 48 (15) 108 (5) 270 (5) 511 (6) <.001
 Survival probability 0.76–0.90, n (%) 844 (5) 29 (9) 116 (5) 214 (4) 485 (5) <.001
 Survival probability 0.51–0.75, n (%) 344 (2) 6 (2) 34 (2) 72 (1) 232 (3) <.001
 Survival probability 0.26–0.50, n (%) 190 (1) 5 (2) 21 (1) 30 (0.5) 134 (1) <.001
 Survival probability 0.00–0.25, n (%) 172 (1) 4 (1) 22 (1) 39 (0.7) 107 (1) 0.022
Mortality, n (%) 378 (2.1) 14 (4.2) 43 (2.0) 73 (1.2) 248 (2.7) <.001
  1. AIS Abbreviated Injury Scale, IQR interquartile range