Figure 2
From: Erythropoietin mimics the acute phase response in critical illness
Box and whisker plot of haemoglobin concentrations against time for all patients. Hollow circles indicate outliers (cases with values of the variable between 1.5 and 3 times the length of the corresponding box for that day and group); filled circles indicate extreme values (cases with values greater than 3 times the corresponding box for that day and group). ARF, acute renal failure.