3.2 Comorbidities, clinical manifestations and laboratory parameters
As presented in Table 1, the difference in diabetes prevalence between the two groups was statistically significant (P < 0.05). However, the difference in HTN, CHD, lung malignancy, and other lung diseases was not statistically significant (P  > 0.05). As shown in Table 2, no statistically significant difference in cough, fever, chest pain, tightness, and breathlessness was found between the two groups (P > 0.05). Moreover, no statistically significant difference in the FIB index was seen between the two groups (P > 0.05). However, significantly increased NLR and CRP, and significantly decreased ALB were observed in the heavy group (P < 0.05) as compared to the general group (Table 3).