Fig. 1From: Comparison of two alcohol hand rubbing techniques regarding hand surface coverage among hospital workers: a quasi-randomized controlled trialDistribution of hand surface area. Hand surface area calculated by 1.219 × hand length × hand circumference (cm2) (Lee et al. [9]). Classification of hand surface area by Pires et al. [10]: small ≤ 375, medium 376–424, large ≥ 425 (cm2)Back to article page