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. 2012 Aug 20;5:39–49. doi: 10.2147/JAA.S33688

Figure 4.

Figure 4

Box plots showing the force required (N) to remove the safety cap from each adrenaline auto-injector at base conditions, after free-fall, and after static load preconditioning.

Notes: Median (line inside box), mean (diamonds), and outlying values (circles) demonstrate that the least amount of force was required to remove the safety cap from Jext and EpiPen under base conditions and after free-fall, which was significantly increased following static load (P < 0.001).