Fig. 2From: Ultrasound-guided versus traditional method for peripheral venous access: an umbrella reviewGraphical representation of data regarding (A) overall success, (B) first-attempt success rate and (C) number of attempts of US-guided method compared to the traditional method. CI, Confidence interval; MD, Mean difference; NA, Not available; OR, Odds ratio; RR, Relative risk; SMD, Standardized mean difference; US, UltrasoundBack to article page