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Table 2 Subjective assessment of sleep quality and state anxiety by condition

From: Effects of earplugs and eye masks on nocturnal sleep, melatonin and cortisol in a simulated intensive care unit environment

  Baseline night NL night NLEE night ANOVA P Contrast P
State anxiety 28.7 ± 6.3 32.5 ± 5.6 29.8 ± 6.4 0.06 0.28
Sleep quality 1.7 ± 1.3 4.1 ± 1.7 2.3 ± 1.3 0.00 0.001
  1. ANOVA, repeated measures analysis of variance; Contrast, paired student's test or wilcoxon's rank sum test of simulated ICU environment with and without earplugs and eye masks; NL, recorded ICU noise and light exposure; NLEE, recorded ICU noise and light, subjects wore earplugs and eye masks.