The hematocrit known as erythrocyte volume fraction (EVF) or packed cell volume (PCV), is the volume percentage of red blood cells in blood. The present report examines the association between hematocrit (HCT) and anyone of seven cardiac parameters such as shock type (SHOCKT), heart rate (HR), mean arterial pressure (MAP), cardiac index (CI), systolic blood pressure (SBP), mean central venous pressure (MCVP), diastolic blood pressure (DBP) for shock patients. It is reported herein that that mean HR is partially positively associated with HCT (P = 0.1002), while mean MAP is partially negatively associated with HCT (P = 0.0988). Variance of MAP is partially positively associated with HCT (P = 0.0703), while variance of CI is negatively associated with HCT (P = 0.0039). On the other hand, mean HCT is negatively associated with shock type (SHOCKT) at level 2 (P = 0.0014) & at level 3 (P = 0.0281). Variance of HCT is partially negatively associated with SBP (P = 0.0947) and HR (P = 0.0718), while it is partially positively associated with CI (P = 0.1049). Note that in epidemiology, partially significant (herein considered around 10% level of significance) effects are known as confounders. It is observed herein that HCT has some effects on HR, MAP, shock type, SBP & CI, but it has no effect on DBP & MCVP for the considered data set.