Definition and Data Collection
Patients with laboratory-confirmed SARS-CoV-2 using
reverse-transcriptase–polymerase-chain reaction (RT-PCR) assay of a
specimen collected on a nasopharyngeal swab or throat swab regardless of
age and gender of the patient were included. A standardized data
extraction form was utilized to collect the data from the medical
records. The study mentions no identifying information from the
participants and all responses were recorded anonymously. The treating
doctor in Klinikum altmühlfranken Weißenburg Hospital provided the
medical records to the research group. The extraction form entailed
epidemiologic data such as the setting of contact and affected family
members. We also reported demographic data such as age, gender, and
associated comorbidities. Information on clinical symptoms or signs at
presentation and X-ray findings were also reported. Moreover, we
collected the laboratory markers such as leukocytes and lymphocytes
count, red blood cells (RBCs), and hemoglobin. Biochemical variables
including lactate dehydrogenase (LDH), alanine aminotransferase (ALT),
aspartate aminotransferase (AST), urea, creatinine, C-reactive protein
(CRP), and electrolytes were reported. Troponin, procalcitonin, and
creatine kinase were also collected. Patients were categorized as either
needed mechanical ventilation or not.