CRP and decubitus ulcer: A correlation was demonstrated between CRP values (chi-square = 5.795, df = 1, <i>p</i> = 0.016) and creatinine levels (chi-square = 7.512, degrees of freedom = 2, <i>p</i> = 0.023, r = 0.25) and the occurrence of pressure ulcers in the heels of critically ill patients.