Based on how you will evaluate your EBP project, which independent and dependent variables do you need to collect?

Based on how you will evaluate your EBP project, which independent and dependent variables do you need to collect? Why?*******My evidenced based project is “In adult patients with central venous catheter placement during acute hospitalization, do alcohol impregnated caps reduce the central line-associated bloodstream infections compared to no alcohol impregnated caps over six months after placement of venous catheter?”