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Table 6 Evaluation of earplugs and eye masks (n = 10)

From: Effect of oral melatonin and wearing earplugs and eye masks on nocturnal sleep in healthy subjects in a simulated intensive care unit environment: which might be a more promising strategy for ICU sleep deprivation?

   One Two Three Four Five
Earplugs Comfort 3 4 2 1 0
  Easy to apply 1 4 3 1 1
  Effectiveness 0 1 3 4 2
Eye masks Comfort 0 1 2 5 2
  Easy to apply 0 0 1 8 1
  Effectiveness 0 1 6 2 1
  1. One: very uncomfortable, very unhelpful, very awkward; Two: uncomfortable, unhelpful, awkward; Three: satisfactory; Four: comfortable, helpful, easy to use; Five: very comfortable, very helpful, very easy to use.