Penn Study: Safe Staffing in PA Hospitals Could Prevent 3,040 Deaths Per Year

A study published this month in Medical Care — led by researchers at Penn Nursing's Center for Health Outcomes and Policy Research (CHOPR) — gives the most detailed quantification yet of what nurse understaffing costs Pennsylvania hospital patients. The findings are relevant to every nurse working in a Pennsylvania hospital, every patient admitted to one, and every legislator who has been sitting on HB 106 since it passed the House 119-84.

What the Study Found

Researchers analyzed data from 547,000 patients and nearly 2,800 nurses across 132 Pennsylvania acute care hospitals. The study documented wide variation in actual nurse workloads: staffing ranged from 3 patients per nurse to 9 patients per nurse across the hospitals sampled. Nurses themselves reported that a typical safe assignment was 4–5 patients. The hospitals at the high end were running significantly above that.

The core finding: each additional patient added to a nurse's assignment was associated with 8% higher odds of patient death within 30 days and 4% higher odds of readmission. That is not a marginal effect. A nurse running 8 patients instead of 4 is associated with 32% higher patient mortality odds — not from negligence, but from arithmetic.

The study also measured the impact on nurses directly. Higher patient loads were associated with 33% higher likelihood of nurses experiencing high burnout, 43% higher likelihood of job dissatisfaction, and 27% higher likelihood of intention to leave their current job. Staffing is not just a patient safety issue — it is a workforce retention issue operating through the same mechanism.

The Dollar Case for Safe Staffing

CHOPR modeled what would happen if Pennsylvania hospitals implemented staffing ratios consistent with the proposed HB 106 Patient Safety Act levels. Their projections:

• 3,040 hospital deaths prevented annually
• 2,100+ readmissions avoided annually
• 77,000+ hospital days avoided per year due to shorter lengths of stay in adequately staffed environments
• $66 million in savings from reduced nurse turnover and replacement costs
• $239 million in savings from shorter average length of stay
• Net: approximately $305 million in total savings from implementing safe staffing

The framing matters: hospitals and hospital industry groups have long argued that mandated staffing ratios are cost-prohibitive. The CHOPR study inverts the calculation. The cost of inadequate staffing — deaths, readmissions, longer stays, turnover — is already being paid. It is just being paid by patients and nurses rather than hospital operating budgets.

How This Connects to HB 106

HB 106, the Pennsylvania Patient Safety Act, passed the state House with a 119-84 bipartisan vote. It has been in the Senate Health and Human Services Committee since then. The bill would impose legally enforceable unit-specific ratios: ICU 1:2, intermediate care 1:3, inpatient psychiatric 1:4, inpatient rehabilitation 1:5, active labor 1:1, emergency department 1:3, step-down/telemetry 1:3, med-surg 1:4.

The Pennsylvania Hospital Association has formally opposed HB 106, arguing that mandated ratios would require hospitals to hire nurses they cannot find and that the flexibility to staff by acuity is preferable to fixed floors. The CHOPR study does not rebut the workforce availability argument directly — it is not a staffing model — but it does document the cost of the status quo that the flexibility argument has been protecting.

State Sen. Maria Collett (D-Lansdale) has championed the Senate version of the bill. As of May 2026, no Senate committee vote has been scheduled. The PSNA maintains a live legislative tracker at nursesofpa.org for nurses who want to monitor movement.

Why This Study Is Different From Prior Research

Nurse staffing research has a long history, and CHOPR — the same group that produced foundational staffing research in the 1990s and 2000s — has been the most consistent producer of peer-reviewed evidence in this area. What distinguishes this study: it uses Pennsylvania-specific patient outcomes data across a large sample of hospitals with documented, measured variation in staffing. It is not a meta-analysis of national aggregates. It is 132 Pennsylvania hospitals, generating specific, applicable projections for the state's policy debate.

The publication in Medical Care — a peer-reviewed health services research journal — gives the findings the kind of methodological weight that advocacy reports and industry briefs do not carry. For legislators navigating between hospital lobbyists and nursing unions, a CHOPR peer-reviewed paper in Medical Care is a different category of evidence than a press release.

What This Means for Nurses Outside Pennsylvania

The CHOPR methodology is portable. Pennsylvania is not unique in its staffing variation — most states outside of California, Oregon, and Massachusetts operate without legally mandated ratio floors and with wide variation in actual nurse workloads. The mortality association documented in Pennsylvania almost certainly applies to hospitals in states like Illinois, Ohio, Georgia, and Tennessee, where no comparable protections exist and where ratio legislation has not advanced. Pennsylvania's HB 106 fight is a proxy for the national debate, and this study just added the most detailed ammunition yet to the case for ratio legislation.