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Table 2 Vital sign and laboratory data on admission

From: The development and validation of a “5A” severity scale for predicting in-hospital mortality after accidental hypothermia from J-point registry data

Parameters Development cohort Validation cohort Total cohort
  (N = 288) (N = 244) (N = 532)
Systolic blood pressure (mm Hg)
 90, n (%) 212 (73.6%) 156 (63.9%) 368 (69.2%)
 61–90 45 (15.6%) 45 (18.4%) 90 (16.9%)
 Near cardiac arrest 31 (10.8 %) 43 (17.6%) 74 (13.9%)
Body temperature (°C), median (IQR) 30.7 (28.3–32.6) 31.0 (28–32.7) 30.8 (28.1–32.6)
 35–32, n (%) 98 (34.0%) 77 (31.6%) 175 (32.9%)
 32–28 124 (43.1%) 104 (42.6%) 228 (42.9%)
 < 28 66 (22.9%) 63 (25.8%) 129 (24.2%)
Disturbance of consciousness
 Mild, n (%) 110 (38.2%) 100 (41.0%) 210 (39.5%)
 Moderate 90 (31.3%) 70 (28.7%) 160 (30.1%)
 Severe 85 (29.5%) 68 (27.9%) 153 (28.8%)
 Missing 3 (1.0%) 6 (2.5%) 9 (1.7%)
pH, median (IQR) 7.31 (7.25–7.37) 7.31 (7.21–7.37) 7.31 (7.23–7.37)
 > 7.35, n (%) 85 (29.5%) 69 (28.3%) 154 (28.9%)
 7.20–7.35 118 (41.0%) 98 (40.2%) 216 (40.6%)
 < 7.20 42 (14.6%) 53 (21.7%) 95 (17.9%)
 Missing 43 (14.9%) 24 (9.8%) 67 (12.6%)
K+ (mmol/l), median (IQR) 4.2 (3.6–4.7) 4.0 (3.5–4.6) 4.1 (3.6–4.7)
 < 3.5, n (%) 59 (20.5%) 54 (22.1%) 113 (21.2%)
 3.5–5.5 198 (68.8%) 155 (63.5%) 353 (66.4%)
 > 5.5 30 (10.4%) 28 (11.5%) 58 (10.9%)
 Missing 1 (0.3%) 7 (2.9%) 8 (1.5%)
Albumin (g/dl), median (IQR) 3.4 (2.9–4.0) 3.5 (2.9–4.0) 3.4 (2.9–4.0)  
 > 3 163 (56.6%) 142 (58.2%) 305 (57.3%)
 ≤ 3 77 (26.7%) 61 (25.0%) 138 (25.9%)
 Missing 48 (16.7%) 41 (16.8%) 89 (16.7%)
  1. In disturbance of consciousness, mild: Glasgow coma scale (GCS) 13–15, or Japan coma scale (JCS) 0–3, moderate: GCS 9–12, or JCS 10–30, severe: GCS < 9, or JCS 100–300
  2. IQR interquartile range, near arrest: systolic blood pressure ≤ 60 mmHg, unmeasurable, or cardiac arrest