CRP and COVID-19: By integrating such psychosocial variables, inflammatory markers (CRP, ferritin, NLR), and the expression of the five DRs (DRD1 to DRD5) in PBMCs into a theoretically proposed model (Figure 1), this study also takes an exploratory approach beyond the original theoretical framework to provide a more comprehensive understanding of the biopsychosocial pathways associated with QoL in patients hospitalized with COVID-19.