Results
Our series consisted of 1700 patients (836 females, 49.2%; 864 males, 50.8%) with an average age of 48.23 ± 16.68 (range: 18-93). A total of 479 patients (28.4%) had comorbidities. As for the prognostic outcome, mortality was reported in 32 patients (2.0%), and the length of hospitalization was 5.03 ± 3.60 days (range: 0-32 days) (Table 1 ).
As shown in Table 2 , the impacts analysis of demographic and clinical variables on survival yielded that advanced age (p<0.001), presence of at least 1 comorbid disease (p=0.045), increased length of hospitalization (p=0.006), elevated white blood cell (p=0.001) and neutrophil (p=0.002) counts, increased serum levels of glucose (p=0.027), blood urea nitrogen (p<0.001), AST (p=0.006), LDH (p<0.001), CRP (p>0.001), and D-dimer (p=0.001). In contrast, diminution of serum levels of albumin (p<0.001), ALT (p=0.028), calcium (p=0.022), and platelet count (p=0.010) were associated with increased mortality (Table 2 ).
Table 3 demonstrates the relationship between clinical variables and length of hospitalization. We noted that there was a positive and weak relationship between serum D-dimer levels and length of hospitalization (r=0.322, p<0.001; Table 3 ).
The performances of clinical variables for the estimation of prognostic outcomes are shown in Table 4. Accordingly, the variables with the highest potential to estimate survival were creatinine (93.7%), D-dimer (88.9%), blood urea nitrogen (87.2%), neutrophil count (80.9%), and LDH (75.9%), respectively. Lower levels of albumin, calcium, salt, and lymphocyte count in the blood were all linked to an increased risk of death (Table 4 ).