Retrospective observational study design
Positive SARS-Cov-2 result defined as a positive real-time transcriptase-polymerase chain reaction assay of nasal and pharyngeal swabs


Study Design of "Baseline Characteristics and Outcomes of 1591 Patients Infected With SARS-CoV-2 Admitted to ICUs of the Lombardy Region, Italy"

Clinical data was collected via phone calls within 6 to 24 hours following ICU admission. Data was collected through March 18, 2020.

Data Collection of "Baseline Characteristics and Outcomes of 1591 Patients Infected With SARS-CoV-2 Admitted to ICUs of the Lombardy Region, Italy"

Patients were grouped by ages: 0-20 years, 21-40 years, 41-50 years, 51-60 years, 61-70 years, 71-80 years, 81-90 years, and 91-100 years.
Mann-Whitney rank sum test was used to compare nonparametric continuous variables between patients with or without hypertension and median age subgroups.
Chi-square or Fisher exact tests were used for categorical variables. 
Statistical tests were 2-tailed, with significance deemed as a p value of < 0.05.
Anaysis was not adjusted.

Statistical Analysis of "Baseline Characteristics and Outcomes of 1591 Patients Infected With SARS-CoV-2 Admitted to ICUs of the Lombardy Region, Italy"

Grasselli G, Zangrillo A, Zanella A, Antonelli M, Cabrini L, Castelli A, et al. (2020). Baseline Characteristics and Outcomes of 1591 Patients Infected With SARS-CoV-2 Admitted to ICUs of the Lombardy Region, Italy. JAMA.
https://doi.org/10.1001/jama.2020.5394

https://jamanetwork.com/journals/jama/fullarticle/2764365

University of Michigan - Ann Arbor

- Baseline Characteristics and Outcomes of 1591 Patients Infected With SARS-CoV-2 Admitted to ICUs of the Lombardy Region, Italy

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