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Table 2 Comparison of quality of sleep before the intensive care unit (ICU) period and 6 months after ICU period (n = 911)

From: Prevalence of sleep disturbances and long-term reduced health-related quality of life after critical care: a prospective multicenter cohort study

Before ICU staya 6 months after ICU stayb
  Good Bad
Good 459 (70) 60 (9)
Bad 56 (8) 85 (13)
  1. Seventy-two percent of the patients answered the questions (a) Rate your overall sleep quality before the intensive care period, and (b) Rate your overall sleep quality during the last month. Data presented as number (%) of totals.