Table 2: Characteristics of the studied population and relative risk to multidrug-resistant micro-organisms positive cultures at the Intensive Care Unit in Regional Hospital of the Southwest Walter Alberto Pecoits, Paraná, Brazil, from January 2014 to February 2016.

Positive Cultures
(n=86)
n (%)
Negative Cultures
(n=699)
n (%)
Relative Risk
(95% Confidence Interval)
p
Age (years)
  18-60 36 (41.9) 324 (46.4) - 0.43
  >60 50 (58.1) 375 (53.6)
Gender
  Male 49 (57.0) 382 (54.6) - 0.68
  Female 37 (43.0) 317 (45.4)
Origin
  Transferred from another health center 28 (32.6) 103 (14.7) 2.41 (1.59 – 3.63) <0.0001
  Community 58 (67.4) 596 (85.3)
Previous antimicrobials use
  No 26 (30.0) 473 (67.7) 4.02 (2.60 – 6.23) <0.0001
  Yes 60 (70.0) 226 (32.3)

a Relative risk: 0.86 (0.78-0.94), 95% confidence interval);
b Relative risk: 0.83 (0.78-0.88), 95% confidence interval).