“…In observational studies conducted in hospitals, HCWs cleaned their hands on average from 5 to as many as 42 times per shift and 1.7-15.2 times per hour (Table I.16.1). 79,137,[217][218][219]262,264,611,613,623,624,[647][648][649][650][651][652][653][654][655] The average frequency of hand hygiene episodes fluctuates with the method used for monitoring (see Part III, Section 1.1) and the setting where the observations were conducted; it ranges from 0.7 to 30 episodes per hour (Table I.16.1). On the other hand, the average number of opportunities for hand hygiene per HCW varies markedly between hospital wards; nurses in paediatric wards, for example, had an average of eight opportunities for hand hygiene per hour of patient care, compared with an average of 30 for nurses in ICUs.…”