predictors for imaging progression on chest ct from coronavirus disease 2019 covid19 patients objective this study aimed to investigate the potential parameters associated with imaging progression on chest ct from coronavirus disease 19 covid19 patientsresults the average age of 273 covid19 patients enrolled with imaging progression were older than those without imaging progression p 0006 the white blood cells platelets neutrophils and acid glycoprotein were all decreased in imaging progression patients all p 005 and monocytes were increased p 0025 the parameters including homocysteine urea creatinine and serum cystatin c were significantly higher in imaging progression patients all p 005 while egfr decreased p 0001 monocytelymphocyte ratio mlr was significantly higher in imaging progression patients compared to that in imaging progressionfree ones p 0001 logistic models revealed that age mlr homocysteine and period from onset to admission were factors for predicting imaging progression on chest ct at first week from covid19 patients all p 005conclusion age mlr homocysteine and period from onset to admission could predict imaging progression on chest ct from covid19 patientsmethods the primary outcome was imaging progression on chest ct baseline parameters were collected at the first day of admission imaging manifestations on chest ct were followedup at 61 days