Table 6

Predictors of mortality following a road traffic injury, May 2019–February 2020

Variables	Categories	Total	RTI deaths	CHR (Crude HAzard Ratio) (95% CI)	AHR (95% CI)
Road user category	Pedestrian	232	43	1.00	1.00
	Passengers	168	22	1.47 (0.88 to 2.46)	1.97 (1.10 to 3.52)*/
	Drivers	54	15	2.36 (1.22 to 4.55)	2.61 (1.28 to 5.30)*
Residence	Urban	264	23	1.00	1.00
Residence	Rural	194	57	3.90 (2.40 to 6.34)	1.98 (1.02 to 3.82)*
Hospital arrival time	Within <1 hour	184	32	1.00	1.00
	Within 1–4 hours	176	25	0.32 (0.45 to 1.30)	0.41 (0.16 to 0.63)**
	Within 24 hours	69	20	1.74 (0.99 to 3.05)	0.42 (0.18 to 0.95)
	After 24 hours	25	3	0.64 (0.19 to 2.09)	0.40 (0.10 to 1.56)
Systolic BP	≤89	53	36	10.07 (6.45 to 15.71)	3.66 (2.14 to 6.26)
Systolic BP	>89	401	44	1.00	1.00
GCS	≤8	64	52	32.44 (19.12 to 55.06)	7.39 (3.08 to 17.74)**
	9–12	18	8	9.97 (4.39 to 22.67)	8.15 (3.35 to 19.82)**
	13–15	372	20	1.00	1.00
Injury site	Non-head injury	262	14	1.00	1.00
	Isolated Head injury	105	33	7.05 (3.77 to 13.19)	2.28 (1.12 to 4.65)*
	Combined head injury	87	33	8.50 (4.54 to 15.89)	2.57 (1.26 to 5.24)**
Prehospital Care # distance	Yes# <60 km	93	7	1.00	1.00
	Yes# >60 km	79	11	1.74 (0.87 to 3.48)	2.98 (1.46 to 4.39)*
	No# <60 km	217	38	0.688 (0.25 to 1.89)	0.60 (0.28 to 1.25)
	No# >60 km	65	24	3.69 (1.76 to 7.73)	0.81 (0.31 to 2.10)

*p<0.05, **p<0.001.
BP, blood pressure; GCS, Glasgow Coma Scale.