Key points are not available for this paper at this time.
Low RN staffing levels are associated with changes in quality and quantity of staff-patient interactions. When RN staffing is low, increases in assistant staff levels are not associated with improved quality of staff-patient interactions. Beneficial effects from adding assistant staff are likely to be dependent on having sufficient RNs to supervise, limiting the scope for substitution.
Bridges et al. (Wed,) studied this question.