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Patient falls in hospitals continue to be a major and costly problem. This study tested the mediating effect of missed nursing care on the relationship of staffing levels (hours per patient day HPPD) and patient falls. The sample was 124 patient units in 11 hospitals. The HPPD was negatively associated with patient falls (r = -0.36, P < .01), and missed nursing care was found to mediate the relationship between HPPD and patient falls.
Kalisch et al. (Fri,) studied this question.