Table 1. - Distribution of frequency (n) and percentage (%) of socio-demographic and clinical variables of patients in the intervention (chlorhexidine antimicrobial dressing) and control (gauze and tape) groups. Curitiba, PR, Brazil, 2012.

Variable		Chlorhexidine Intervention group (n=43)			Control group dressing (n=42)		p-value
		n	%		n	%
Sex							0.5379*
	Female	19	44.2		18	42.9
	Male	24	55.8		24	57.1
Ethnicity							0.1663*
	Caucasian	36	83.7		39	92.9
	African-descendant	7	16.3		3	7.1
Primary focus of pathology							0.2669†
	Digestive system	18	41.9		9	21.4
	Nervous system	10	23.2		11	26.2
	Malignant neoplasia	7	16.3		7	16.7
	Circulatory system	2	4.6		5	11.9
	Other	6	14.0		10	23.8
Comorbidities							0.2683†
	One	5	11.6		12	28.6
	Two	13	30.2		8	19.1
	Three	5	11.6		4	9.5
	Four or more	2	4.7		4	9.5
	No comorbidities	18	41.9		14	33.3
Hospitalization unit							0.2298*
	Intensive Care Unit	40	93.0		36	85.7
	Semi-intensive care unit	3	7.0		6	14.3
Discharge or death							0.3784*
	Discharge	27	62.8		24	57.1
	Death	16	37.2		18	42.9
Antimicrobial before puncture							0.5152†
	One antimicrobial	6	14.0		10	23.8
	Two antimicrobial	9	20.9		8	19.1
	Three or more antimicrobial	3	7.0		5	11.9
	No	25	58.1		19	45.2

^* Fisher's exact test

^† G-test