scholarly journals Quantification of the Hawthorne effect in hand hygiene compliance monitoring using an electronic monitoring system: a retrospective cohort study

2014 ◽  
Vol 23 (12) ◽  
pp. 974-980 ◽  
Author(s):  
Jocelyn A Srigley ◽  
Colin D Furness ◽  
G Ross Baker ◽  
Michael Gardam
2014 ◽  
Vol 35 (9) ◽  
pp. 1163-1168 ◽  
Author(s):  
Jun Yin ◽  
Heather Schacht Reisinger ◽  
Mark Vander Weg ◽  
Marin L. Schweizer ◽  
Andrew Jesson ◽  
...  

ObjectiveHand hygiene surveillance programs that rely on direct observations of healthcare worker activity may be limited by the Hawthorne effect. In addition, comparing compliance rates from period to period requires adequately sized samples of observations. We aimed to statistically determine whether the Hawthorne effect is stable over an observation period and statistically derive sample sizes of observations necessary to compare compliance rates.DesignProspective multicenter cohort study.SettingFive intensive care units and 6 medical/surgical wards in 3 geographically distinct acute care hospitals.MethodsTrained observers monitored hand hygiene compliance during routine care in fixed 1-hour periods, using a standardized collection tool. We estimated the impact of the Hawthorne effect using empirical fluctuation processes and F tests for structural change. Standard sample-size calculation methods were used to estimate how many hand hygiene opportunities are required to accurately measure hand hygiene across various levels of baseline and target compliance.ResultsExit hand hygiene compliance increased after 14 minutes of observation (from 56.2% to 60.5%; P < .001) and increased further after 50 minutes (from 60.5% to 66.0%; P < .001). Entry compliance increased after 38 minutes (from 40.4% to 43.4%; P = .005). Between 79 and 723 opportunities are required during each period, depending on baseline compliance rates (range, 35%–90%) and targeted improvement (5% or 10%).ConclusionsLimiting direct observation periods to approximately 15 minutes to minimize the Hawthorne effect and determining required number of hand hygiene opportunities observed per period on the basis of statistical power calculations would be expected to improve the validity of hand hygiene surveillance programs.Infect Control Hosp Epidemiol 2014;35(9):1163-1168


2018 ◽  
Vol 19 (3) ◽  
pp. 116-122 ◽  
Author(s):  
A Jeanes ◽  
J Dick ◽  
P Coen ◽  
N Drey ◽  
DJ Gould

Background: Hand hygiene compliance scores in the anaesthetic department of an acute NHS hospital were persistently low. Aims: To determine the feasibility and validity of regular accurate measurement of HHC in anaesthetics and understand the context of care delivery, barriers and opportunities to improve compliance. Methods: The hand hygiene compliance of one anaesthetist was observed and noted by a senior infection control practitioner (ICP). This was compared to the World Health Organization five moments of hand hygiene and the organisation hand hygiene tool. Findings: In one sequence of 55 min, there were approximately 58 hand hygiene opportunities. The hand hygiene compliance rate was 16%. The frequency and speed of actions in certain periods of care delivery made compliance measurement difficult and potentially unreliable. During several activities, taking time to apply alcohol gel or wash hands would have put the patients at significant risk. Discussion: We concluded that hand hygiene compliance monitoring by direct observation was invalid and unreliable in this specialty. It is important that hand hygiene compliance is optimal in anaesthetics particularly before patient contact. Interventions which reduce environmental and patient contamination, such as cleaning the patient and environment, could ensure anaesthetists encounter fewer micro-organisms in this specialty.


Author(s):  
Noushin Karimpour ◽  
Burak Karaduman ◽  
Aybars Ural ◽  
Moharram Challenger ◽  
Orhan Dagdeviren

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