Skip to main content

Table 1 Demographics of the group with valid recordings, and the subgroup randomly selected for additional analysis by M2

From: Inter-rater disagreement in manual scoring of intensive care unit sleep data

Characteristic

Valid recordings (n = 61)

Analysed by M2 (n = 17)

p-value*

N (%)

N (%)

Sex

23 (37.7)

8 (47.06)

0.357

ICU admission diagnosis

 Surgical

19 (31.15)

5 (29.41)

0.859

 Medical

42 (68.85)

12 (70.59)

0.859

12 month mortality

19 (31.15)

4 (23.53)

0.433

 

Median (IQR)

Median (IQR)

 

BMI

26 (23–29)

28 (24–32)

0.256

Age, years

60 (52–67)

63 (52–67)

0.388

Duration of hospital stay, days

31 (19–55.49)

21.99 (15.99–43)

0.573

Duration of ICU stay, days

10.99 (5.51–25.50)

7.01 (4.01–18.98)

0.014

Duration of recording, hours

47.74 (17.22)

46.66 (43–65.89)

0.248

APACHE IV

69 (47–82)

74 (61.25–81.25)

0.098

SAPS II

40 (31–49)

42 (36–44)

0.214

Mechanical ventilation, days

7 (1–16)

5 (1–14)

0.282

  

Mean (SD)

 

Medication dose per day

 Benzodiazepines, mg Lorazepam equivalent

1.55 (4.82)

2.95 (8.77)

0.371

 Opioids, mg Morphine equivalent

1.80 (3.63)

0.95 (1.92)

0.242

 Propofol 2%, ml

1.81 (7.27)

2.96 (10.59)

0.459

  1. *p-values for the comparison between the subgroup analysis by M2 versus those not analysed by M2
  2. None of the differences between the groups were statistically significant after a Benjamini–Hochberg procedure for 15 comparisons, with an acceptable false discovery rate of 10%