Table 2

Comparison of patients included and excluded

Characteristic	No. (%) of patients or mean ± SD (range)		p value
Characteristic	Included, n = 160	Missed/excluded, n = 141	p value
Age, yr^*	56 ± 20 (18–89)	64 ± 24 (18–101)	0.002
Male sex^†	84 (53)	60 (43)	0.08
Polytrauma^†	50 (31)	36 (26)	0.06

SD = standard deviation.
↵* Student t test.
↵† χ² test.