Table 5

Median grades (interquartile ranges) for the three intervention periods

N

SDD

SOD

Standard care

P value^

median (IQR)

median (IQR)

median (IQR)

Nurses

Workload^a

207

5.0 (4.0-7.0)

4.0 (3.0-6.0)

2.0 (1.0-4.0)

0.000

Pt friendliness^b

197

4.0 (2.0-5.0)

4.0 (3.0-6.0)

7.0 (3.0-9.0)

0.000

Physicians

Workload^a

30

5.5 (3.8-7.0)

5.0 (3.0-6.0)

2.5 (2.0-4.0)

0.000

Pt friendliness^b

27

6.0 (4.0-7.0)

6.0 (4.0-6.0)

8.0 (6.0-9.0)

0.003

IQR, interquartile range; N, number of responses; pt, patient; SDD, selective decontamination of the digestive tract; SOD, selective oropharyngeal decontamination.

^ significance based upon Friedman test.

^a Workload measured on a scale from 1 (low) to 10 (high).

^b Patient friendliness measured on a scale from 1 (poor) to 10 (excellent).

Jongerden et al. Critical Care 2010 14:R132   doi:10.1186/cc9180