McHugh MD, Aiken LH, Sloane DM, et al. - This study was intended to evaluate the impacts of this policy on staffing levels and patient outcomes and if both were correlated. Researchers correlated Queensland hospitals patients to the ratio policy (27 intervention hospitals) and those that discharged similar patients but were not subject to ratios (28 comparison hospitals) at two-time points: before implementation of ratios (baseline) and 2 years after implementation (post-implementation) for this prospective panel study. In this study, 231,902 patients (142,986 in intervention hospitals and 88,916 in comparison hospitals) evaluated at baseline (2016) and 257,253 patients (160,167 in intervention hospitals and 97,086 in comparison hospitals) tested in the post-implementation period (2018). The data demonstrated that minimum nurse-to-patient ratio policies were found to be a feasible approach to improve nurse staffing and patient outcomes with a good return on investment.