ABSTRACT CROSS-SECTIONAL AND LONGITUDINAL ASSOCIATIONS BETWEEN NURSING RESOURCES AND HOSPITAL PERFORMANCE ON PATIENTS’ CARE EXPERIENCES Kathleen E. Fitzpatrick Rosenbaum Eileen T. Lake Patient experience ratings are assessments from patients regarding the care they received during their hospitalizations. Key components of care such as nurse communication, medication education, and discharge information are quantitatively measured to assess hospitalized patients’ experiences. The Centers for Medicare and Medicaid Services (CMS) measures patient experience using the Hospital Consumer Assessment Healthcare Providers and Systems (HCHAPS) survey which. How hospitals perform on patient experience accounts for 25% of a hospital’s Value Based Purchasing score, i.e., the financial reimbursement from CMS for patient care hospitals provide. Hospital administrators often lack empirical evidence with which to make decisions on how to invest limited hospital resources to improve patient experience ratings. We identified which modifiable organizational features of nursing, (i.e., nursing resources: staffing, skill mix, education, work environment) are associated with favorable HCAHPS survey ratings, how changes over time in those resources were associated with changes in HCAHPS survey ratings, and if changes in nursing resources affected hospitals differently depending on whether the hospitals were the highest, middling, or lowest HCAHPS performers before the change period we observed. We utilized linear and ordinal regression modeling, with and without an interaction term, to provide both cross-sectional and longitudinal findings. We elucidated which nursing resources in the cross-section yielded the same effects over time. To identify which resources are most effectual, we used standardized independent variables to compare effect sizes across nursing resources. We found that, among the various nursing resources, the work environment had the greatest impact on determining if a hospital would be in the highest performing category and on a hospital improving HCAHPS survey ratings over time. We identified that staffing was the second most efficacious resource and that there were differential impacts for changes in the work environment on the rate of change in HCAHPS survey ratings. It would be advantageous for hospital administrators to invest in their work environments and nurse staffing to improve HCAHPS survey ratings and potential financial gains.