After adjusting for patients' demographic and clinical factors (see Table 4), the patients who received the MDNP intervention consistently had less drug and antibiotic days, spent less on antibiotics alone and on overall drug costs, and were less likely to incur high drug costs.
The results imply that the effect of the MDNP intervention on drug utilization was only modest when individual LOS was adjusted.
While decreased drug costs were strongly associated with shorter LOS, it is reasonable to argue that the effective drug therapy prescribed and managed by the MDNP team was part of the cause of the reduction in LOS.
Investigators from the initial MDNP study published several other significant findings associated with the MDNP model.
Briefly, the MDNP team intervention, which integrated hospitalist medical director, NPs, and multidisciplinary care management, produced a conservative estimate of $978 net cost saving per patient during the index hospital stay (Cowan et al.
2005) examined the impact of the MDNP intervention on communication and collaboration among care providers.