Measuring hand hygiene compliance rates in different special care settings: a comparative study of methodologies.

Objectives: The purpose of this study was to compare methods for assessing compliance with hand hygiene in an intensive care unit (ICU), a step-down unit (SDU), and a hematology-oncology unit.

Methods: Over a 20-week period, we compared hand hygiene compliance measurements by three different methods: direct observation, electronic handwash counter for alcohol gel, and measuring the volume of product used (alcohol gel) in an ICU, an SDU, and a hematology-oncology unit of a tertiary care, private hospital.

Results: By direct observation we evaluated 1078 opportunities in the ICU, 1075 in the SDU, and 517 in the hematology-oncology unit, with compliance rates of 70.7%, 75.4%, and 73.3%, respectively. A total of 342,299, 235,914, and 248,698 hand hygiene episodes were recorded by the electronic devices in the ICU, SDU, and hematology-oncology unit, respectively. There were also 127.2 ml, 85.3 ml, and 67.6 ml of alcohol gel used per patient-day in these units. We could find no correlation between the three methods.

Conclusions: Hand hygiene compliance was reasonably high in these units, as measured by direct observation. However, a lack of correlation with results obtained by other methodologies brings into question the validity of direct observation results, and suggests that periodic audits using other methods may be needed.