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Patient outcomes and cost savings associated with hospital safe nurse staffing legislation: an observational study.


ABSTRACT:

Objective

To evaluate variation in Illinois hospital nurse staffing ratios and to determine whether higher nurse workloads are associated with mortality and length of stay for patients, and cost outcomes for hospitals.

Design

Cross-sectional analysis of multiple data sources including a 2020 survey of nurses linked to patient outcomes data.Setting: 87 acute care hospitals in Illinois.

Participants

210 493 Medicare patients, 65 years and older, who were hospitalised in a study hospital. 1391 registered nurses employed in direct patient care on a medical-surgical unit in a study hospital.

Main outcome measures

Primary outcomes were 30-day mortality and length of stay. Deaths avoided and cost savings to hospitals were predicted based on results from regression estimates if hospitals were to have staffed at a 4:1 ratio during the study period. Cost savings were computed from reductions in lengths of stay using cost-to-charge ratios.

Results

Patient-to-nurse staffing ratios on medical-surgical units ranged from 4.2 to 7.6 (mean=5.4; SD=0.7). After adjusting for hospital and patient characteristics, the odds of 30-day mortality for each patient increased by 16% for each additional patient in the average nurse's workload (95% CI 1.04 to 1.28; p=0.006). The odds of staying in the hospital a day longer at all intervals increased by 5% for each additional patient in the nurse's workload (95% CI 1.00 to 1.09, p=0.041). If study hospitals staffed at a 4:1 ratio during the 1-year study period, more than 1595 deaths would have been avoided and hospitals would have collectively saved over $117 million.

Conclusions

Patient-to-nurse staffing ratios vary considerably across Illinois hospitals. If nurses in Illinois hospital medical-surgical units cared for no more than four patients each, thousands of deaths could be avoided, and patients would experience shorter lengths of stay, resulting in cost-savings for hospitals.

SUBMITTER: Lasater KB 

PROVIDER: S-EPMC8655582 | biostudies-literature | 2021 Dec

REPOSITORIES: biostudies-literature

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Patient outcomes and cost savings associated with hospital safe nurse staffing legislation: an observational study.

Lasater Karen B KB   Aiken Linda H LH   Sloane Douglas D   French Rachel R   Martin Brendan B   Alexander Maryann M   McHugh Matthew D MD  

BMJ open 20211208 12


<h4>Objective</h4>To evaluate variation in Illinois hospital nurse staffing ratios and to determine whether higher nurse workloads are associated with mortality and length of stay for patients, and cost outcomes for hospitals.<h4>Design</h4>Cross-sectional analysis of multiple data sources including a 2020 survey of nurses linked to patient outcomes data.<b>Setting</b>: 87 acute care hospitals in Illinois.<h4>Participants</h4>210 493 Medicare patients, 65 years and older, who were hospitalised i  ...[more]

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