RESULTS	Dose accuracies ( as assessed by weighing the delivered dose and calculating variation in the delivered dose by device ) were 4.6 % with FlexPro , 14.6 % with easypod , and 20.6 % with the Genotropin pen in the intuitiveness group , and 2.7 % with FlexPro , 5.8 % with easypod , and 24.4 % with the Genotropin pen in the instruction group .\