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Table 2 Tests for significance of differences between trial arms in MDRO infection incidence density (MDRO), hand hygiene compliance, and alcohol-based hand rub usage (AHRU) within each year of the study period, respectively (hand hygiene compliance data are from [15] and reprinted with permission)

From: Impact of psychologically tailored hand hygiene interventions on nosocomial infections with multidrug-resistant organisms: results of the cluster-randomized controlled trial PSYGIENE

 

Tailoring-trial arm vs. ASH-trial arm in

a) MDRO

Difference

95%-CI

p-value

 2013

+0.154 i. per 1 k inpatient days

[-1.069; 1.376]

p = 0.785

 2014

-0.020 i. per 1 k inpatient days

[-0.811; 0.771]

p = 0.956

 2015

-0.322 i. per 1 k inpatient days

[-1.347; 0.704]

p = 0.501

b) Hand hygiene compliance

Difference

95%-CI

p-value

 2013

-1%

[-4.1; 2.3]

p = 0.581

 2014

-4%

[-7.5; -1.3]

p = 0.006

 2015

+6%

[2.4; 9.5]

p = 0.001

c) AHRU

Difference

95%-CI

p-value

 2013

-9 ml per inpatient day

[-72; 55]

p = 0.773

 2014

-26 ml per inpatient day

[-84; 32]

p = 0.346

 2015

-34 ml per inpatient day

[-82; 13]

p = 0.137