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Table 6 Influence of sound sources on sleep stages transitions and arousals. (Supplementary material)

From: Sound level intensity severely disrupts sleep in ventilated ICU patients throughout a 24-h period: a preliminary 24-h study of sleep stages and associated sound levels

  Day (08h00–22h00) ORa (95% IC) Night (22h00–08h00) ORa (95% IC)
Alarm, n/h 1.9 (1.5–2.4) 1.9 (1.5–2.4)
Mechanical respirators, n/h 2.6 (2.3–2.9) 1.8 (2.3–2.9)
Talking; staff conversations, n/h 2.0 (1.6–2.4) 2.0 (1.6–2.4)
Other, n/h 1.9 (1.5–2.4) 1.8 (1.8–3.2)
Arousals
 Alarm, n/h 4.9 (3.4–6.7) 9.8 (8.6–11.3)
 Mechanical respirators, n/h 7.4 (6.1–8.7) 10.9 (9.8–11.9)
 Talking, staff conversations, n/h 3.0 (2.4–3.6) 5.2 (4.5–6.1)
 Other, n/h 3.8 (2.3–6.3) 8.4 (6.9–10.1)
  1. ORa OR adjusted for subject, hour and age