Analysis 3.3. Comparison 3 Safe intravenous systems versus regular systems RCT, Outcome 3 Incidence of blood leakage......... Analysis 4.1. Comparison 4 Safe intravenous systems versus regular systems CBA, Outcome 1 Number of needlestick injuries..... Analysis 5.1. Comparison 5 Safe intravenous systems versus regular systems ITS, Outcome