Multicenter study of health care cost of patients admitted to hospital with Staphylococcus aureus bacteremia: Impact of length of stay and intensity of care

American Journal of Infection Control
Nisha ThampiAndrew M Morris

Abstract

Methicillin-susceptible Staphylococcus aureus (MSSA) and methicillin-resistant S aureus bacteremia (SAB) have both been associated with high morbidity and mortality and heavy consumption of health care resources. We compared clinical and economic data for hospitalized cases of SAB in the context of a publicly funded health care system. A cost analysis was undertaken on an adult cohort of patients from 4 hospitals with SAB diagnosed within 3 days of hospitalization. Primary outcome was direct cost of inpatient care per case, determined at discharge and itemized using a standardized methodology. A total of 435 patients were admitted with SAB; 58 had methicillin-resistant S aureus (MRSA). The median length of stay was similar in patients with MRSA and MSSA. There was no significant difference between the groups for mortality. Median direct medical costs of SAB were $12,078. Patients with MRSA had 1.32 times higher direct costs than MSSA. A similar estimate was derived using a propensity score approach (P = .148). Human health care resources comprised >70% of total costs per case, whereas antibiotics comprised 1%-2%. Understanding the dynamics of resource consumption is critical to improving its efficiency and the quality of patien...Continue Reading

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