Table 1

Constructs of the questionnaire on behavioural determinants of hand hygiene with example questions and internal consistency (Cronbach's α)

Construct# itemsMean (SD)Cronbach's αExample
Knowledge54.3 (0.78)five true/false questions about factual knowledge
Risk perception:
Chance35.6 (1.7)0.76How big is the chance that an infection will occur
Severity self15.6 (2.3)How severe will the consequences of an infection be for myself
Severity patient17.2 (1.5)How severe will the consequences of an infection be for my patient
Attitudes:
Beliefs about hand hygiene85.3 (0.81)0.76Hand hygiene is something I find important
Perceived outcomes55.0 (0.98)0.78If I follow that hand hygiene guidelines my patients will develop fewer infections
Social norms:
Referent beliefs44.7 (1.2)0.91My superior thinks that I should always follow the hand hygiene guidelines
Descriptive norm83.5 (0.81)0.73My colleagues always follow the hand hygiene guidelines
Self-efficacy114.8 (0.94)0.89I am certain that I will be able to follow the hand hygiene guidelines
Habit124.7 (1.1)0.95Following the hand hygiene guidelines is something I do without thinking about it