Table 1. Comparison between the groups of high and medium/low nursing workload in relation to the nominal variables.

Variable	NAS
	High		Medium/Low		p
	n	%	n	%
Gender
Male	61	88.4	103	78.6	0.087*
Female	8	11.6	28	21.4	0.087*
External cause
Transport accident - Pedestrian or cyclist	17	24.6	23	17.6	0.327*
Transport accident - Motorcycle rider	17	24.6	38	29.0	0.327*
Transport accident - Occupant of anautomobile, truck or heavy transport vehicle	7	10.2	13	9.9	0.327*
Falls	17	24.6	45	34.3	0.327*
Other expenses	11	16.0	12	9.2	0.327*
Origin
Emergency Room	15	21.7	39	29.8	0.371**
Surgical Center	51	73.9	89	67.9	0.371**
Other	03	4.4	3	2.3	0.371**
Location of the AIS injuries ≥3
Head or neck (yes)	47	68.1	84	64.1	0.572*
Face (yes)	06	8.7	05	3.8	0.193**
Thorax (yes)	28	40.6	45	34.4	0.384*
Abdominal or pelvic content (yes)	11	15.9	16	12.2	0.463*
Extremities or pelvic girdle (yes)	21	30.4	23	17.6	0.037 *
External surface (yes)	-	-	-	-	-
Most severely injured body region
Head or neck (yes)	45	65.2	83	63.4	0.795*
Face (yes)	01	1.4	03	2.3	1.000**
Thorax (yes)	16	23.2	39	29.8	0.322*
Abdominal or pelvic content (yes)	09	13.0	13	9.9	0.503*
Extremities or pelvic girdle (yes)	14	20.3	16	12.2	0.128*
External surface (yes)	-	-	-	-	-
Type of organ failure
Cardiology (yes)	30	43.5	37	28.2	0.030 *
Hematologic (yes)	04	5.8	04	3.1	0.451**
Liver (yes)	05	7.2	04	3.1	0.280**
Neurological (yes)	59	85.5	79	60.3	<0.001 *
Renal (yes)	43	62.3	51	38.9	0.002
Pulmonary (yes)	66	95.7	87	66.4	<0.001 *

São Paulo, Brazil (2010–2011).

*Association test Pearson’s chi-square test,

**Fisher exact Test.