ALB and infection: The strongest predictors of appropriate antibiotic prophylaxis were related to the patients’ health status, since those having a low serum albumin (OR = 3.66; CI95% 1.8–7.44) and a clinical infection (OR = 3.9; CI95% 1.56–9.75) were almost four times as likely as those who did not have a low serum albumin and a clinical infection to receive an inappropriate antibiotic prophylaxis.