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. 2021 Jun 8;35(9):5381–5391. doi: 10.1007/s00464-021-08569-w

Fig. 4.

Fig. 4

Left: Overall Van der Laan’s technology acceptance score by Surgeons (ST) and Human scrub nurses (HSN) and (right) analytical results. The usefulness scale derives from the average of useful/useless, good/bad, effective/superfluous, assisting/worthless, raising alertness/sleep-inducing metrics and satisfaction scale derives from pleasant/unpleasant, nice/annoying, likeable/irritating, desirable/undesirable metrics. The scale ranges between − 2 and + 2, with higher values indicating positive bias on the specific attribute