Table 1.

Demographics, initial clinical variables, and injury severity with respect to periods

	Before the negotiation period (n = 65)	During the negotiation period (n = 29)	p
Age	25 (21–30)	26 (24–29)	0.41
SBP	110 (82–134)	116 (84–131)	0.98
Shock Index	0.90(0.67–1.3)	0.92(0.67–1.2)	0.99
HR	102 (84–120)	110 (88–120)	0.58
Tachycardia*, n	38	21	0.25
Hypotension**, n	22	8	0.63
Mode of transport
Helicopter, n	53	25	0.76
Ambulance, n	12	4	0.76
Trauma mechanism
Gunshot rifle, n	30	15	0.66
Blast injuries, n	35	14	0.66
Landmine injuries, n	16	9	0.61
Trauma severity
ISS, median (IQR)	25 (16–30)	14 (10–22)	< 0.01
ISS > 15, n (%)	53 (81.5)	13 (44.8)	< 0.01

SBP systolic blood pressure, HR heart rate, ISS Injury Severity Score

*Heart rate > 90 bpm; **systolic blood pressure < 90 mmHg