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. 2015 Apr 22;10(4):e0121179. doi: 10.1371/journal.pone.0121179

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© 2015 Aldaz et al

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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Fig 6 — Nurses’ preferences for various hands-free interaction tasks as given by the normalized difference between the sum of ranks for feature preferences. A value of +1 indicates that all participants preferred the SnapCap feature, while a value of -1 that all participants did not prefer the SnapCap feature.