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Table 1 Baseline demographic characteristics of elderly trauma patients

From: The impact of age and receipt antihypertensives to systolic blood pressure and shock index at injury scene and in the emergency department to predict massive transfusion in trauma patients

 

Overall elderly

(n = 1949)

Non-antihypertensive group

(n = 951)

Antihypertensive group

(n = 998)

P value

Age (IQR), yr

76.0 (70.0–81.0)

75.0 (69.0–80.0)

77.0 (71.0–82.0)

< 0.001

Male sex, n (%)

1002 (51.4)

539 (56.7)

463 (46.4)

< 0.001

Comorbidities, n (%)

 Diabetes

529 (27.1)

167 (17.6)

362 (36.3)

< 0.001

 Cerebrovascular accident

271 (13.9)

92 (9.7)

179 (17.9)

< 0.001

 Congestive heart failure

68 (3.5)

29 (3.0)

39 (3.9)

0.575

 Chronic renal disease

127 (6.5)

34 (3.6)

93 (9.3)

< 0.001

 Traumatic brain injury, n (%)

96 (4.9)

57 (6.0)

39 (3.9)

0.033

 Prehospital response time (IQR), min

9.0 (6.0–14.0)

9.0 (7.0–14.0)

9.0 (6.0–15.0)

0.912

 Total prehospital time (IQR), min

24.0 (17.5–33.0)

25.0 (17.5–34.0)

23.0 (17.5–32.0)

0.498

 Prehospital IV hydration, n (%)

57 (2.9)

38 (4.0)

19 (1.9)

0.014

Physiological parameters (IQR)

 At the injury scene

  SBP, mmHg

140.0 (121.0–160.0)

130.0 (120.0–153.0)

140.0 (120.0–160.0)

0.048

  HR, beats per min

80.0 (72.0–90.0)

80.0 (72.0–90.0)

82.0 (72.0–93.5)

0.414

  SI

0.59 (0.51–0.71)

0.60 (0.51–0.70)

0.59 (0.50–0.71)

0.571

 At ED arrival

  SBP, mmHg

147.0 (124.0–165.0)

134.0 (121.0–162.0)

149.0 (128.0–168.0)

< 0.001

  HR, beats per min

82.0 (71.0–94.0)

82.0 (71.0–95.0)

82.0 (71.0–94.0)

0.603

  SI

0.57 (0.47–0.69)

0.58 (0.49–0.72)

0.56 (0.47–0.68)

0.001

  GCS

15.0 (14.0–15.0)

15.0 (15.0–15.0)

15.0 (14.0–15.0)

0.131

 Mechanism of injury, n (%)

0.433

  Blunt

1916 (98.3)

933 (98.1)

983 (98.5)

 

  Penetrating

33 (1.7)

18 (1.9)

15 (1.5)

 

 ISS (IQR)

9.0 (5.0–14.0)

9.0 (5.0–16.0)

9.0 (5.0–13.0)

0.195

 RTS (IQR)

12.0 (11.0–12.0)

12.0 (12.0–12.0)

12.0 (11.0–12.0)

0.004

 Clinical course and interventions

  Length of stay in ICU (IQR), day

0 (0–0.67)

0 (0–0.65)

0 (0–0.67)

0.932

  Transfusion, n (%)

443 (22.7)

210 (22.1)

233 (23.3)

0.794

  Massive transfusion, n (%)

56 (2.9)

37 (3.9)

19 (1.9)

0.009

  30-day mortality, n (%)

149 (7.6)

89 (9.4)

60 (6.0)

0.005

  1. IQR denotes interquartile range
  2. ED emergency department, ICU intensive care unit, IV intravenous, HR heart rate, GCS glasgow coma scale, ISS injury severity score, RTS revised trauma score, SBP systolic blood pressure, SI shock index