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This meta-analysis aims to evaluate the effects of nurse staffing levels on various patient outcomes, including mortality and patient safety.

June 13, 2026Open Access

Comparative analysis of nurse staffing levels and their association with mortality, patient safety, missed nursing care, length of stay, and readmissions: a meta-analysis

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This meta-analysis aims to evaluate the effects of nurse staffing levels on various patient outcomes, including mortality and patient safety.
Conducted a meta-analysis using various studies to assess the impact of nurse staffing ratios on outcomes.
Collected data including odds ratios (OR) or risk ratios with 95% confidence intervals (CI).
Focused on associations with mortality, patient safety, missed nursing care, length of stay, and readmissions.
Adequate nurse staffing levels are associated with significantly lower mortality rates (OR 0.76, 95% CI 0.68-0.85, p<0.001).
Inadequate staffing correlates with higher rates of health care-associated infections and surgical complications (OR 1.33, 95% CI 1.20-1.48, p<0.001).
Longer lengths of stay were reported in settings with inadequate nurse staffing (mean difference 2.5 days, 95% CI 1.8-3.2, p<0.001).

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Meta-analysis compares nurse staffing levels and their effects on mortality, patient safety, and readmissions, indicating significant associations.

Dluha Mafula (2025) studied this question.

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Meta-analysis compares nurse staffing levels and their effects on mortality, patient safety, and readmissions, indicating significant associations.