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Table 3 Ventilator performance in the UE/CC, NASA-TLX, and PSSUQ metrics

From: The usability of ventilators: a comparative evaluation of use safety and user experience

  Use error and close calls (% of tasks) Use safety NASA-TLX (0–100) Workload PSSUQ (1–7) System usability
Ventilator Mean Standard deviation Mean Standard deviation Mean Standard deviation
G5 12.8 10.7 28.3 20.5 2.7 1.3
PB980 13.2 11.9 43.7 21.9 3.5 1.5
SERVO-U 9.1 11.0 21.5 17.1 1.7 0.9
V500 16.9 14.1 34.6 20.8 3.1 1.4
  1. Lower scores on all three metrics correspond to better perception/performance
  2. UE/CC use error/close call, NASA-TLX National Aeronautics and Space Administration Task Load Index, PSSUQ Post-Study System Usability Questionnaire