Fig. 1.

Nurse-level hand hygiene rate by opportunity. Estimates are obtained from the intercept in either a Poisson or logistic specification in the generalized linear model where nurses are defined as a random intercept. All adherence types are specified as Poisson; except logistic regression was used for on arrival in home, after touching surroundings, and before leaving surroundings opportunity types because a maximum of 1 opportunity was observed across all visits. Each estimate of adherence rate shown above is translated back from the link function to a probability. In parentheses, the following notation is used: ON, the number of nurses with at least one hand hygiene opportunity present at a visit; AO, number of hand hygiene adherent opportunities; O, number of opportunities observed.