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Table 1 Main characteristics of included patients

From: Impact of earplugs and eye mask on sleep in critically ill patients: a prospective randomized study

  Control group (n = 31) Intervention group (n = 30) p Value
Patient characteristics
 Age, years 65 (58–74) 64 (54–74) 0.99
 Sex, male, n (%) 18 (58) 20 (67) 0.48
 SAPS II score 45 (27–65) 42 (26–60) 0.60
 Charlson comorbidity index score 4 (3–6) 4 (2–5) 0.30
Main reasons for ICU admission, n (%)
 Acute respiratory failure 23 (74) 20 (67) 0.71
 Pneumonia/pleural effusion 11 8  
  Chronic respiratory disease 4 7  
  Cardiogenic pulmonary edema 5 3  
  Neuromuscular disease 2 0  
  Vascular disease 1 2  
 Postoperative care/trauma, n (%) 3 (10) 4 (13) 0.96
 Metabolic, n (%) 3 (10) 4 (13) 0.96
 Nonrespiratory sepsis, n (%) 2 (6) 2 (7) 0.63
Prior to inclusion
 Days of sedation 3 (2–8) 4 (2–7) 0.30
 Time from end of sedation to inclusion, days 3 (0–4) 1 (0–4) 0.49
On inclusion
 RASS 0 (0–0) 0 (0–0) 0.19
 Comfort score, VAS 60 (50–80) 70 (50–80) 0.92
 Physiologic variables    
  Temperature, °C 37.1 (36.9–37.4) 37.1 (36.2–37.6) 0.66
  Heart rate, beats/minute 98 (83–116) 86 (76–108) 0.29
  Systolic blood pressure, mmHg 115 (106–140) 130 (121–134) 0.19
  Respiratory rate, breaths/minute 22 (20–25) 19 (16–25) 0.18
 Analgesic treatment, n (%) 17 (55) 11 (37) 0.15
 Mechanical ventilation 6 (19) 5 (17) 0.35
  Invasive ventilation, n (%) 6 (19) 3 (10)  
  Noninvasive ventilation, n (%) 0 2 (7)  
  1. RASS Richmond Agitation-Sedation Scale, SAPS II Simplified Acute Physiology Score II, ICU Intensive care unit, VAS Visual analogue scale (0 = maximal discomfort, 100 = maximal comfort)
  2. Results are expressed as median (interquartile range) or frequency (%)
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