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Table 5 Subgroup analysis

From: Distribution of delirium motor subtypes in the intensive care unit: a systematic scoping review

Subgroup (no. of studies in this subgroup)

Hypoactive pooled proportion (%) (95% CI)

Hyperactive pooled proportion (%) (95% CI)

Mixed pooled proportion (%) (95% CI)

Subgroup analysis

 Medical versus surgical ICUs

  Medical (n = 12)

40.4 (24.8–55.9)

28.2 (15.6–40.7)

29.4 (17.6–41.1)

  Surgical (n = 23)

54.1 (43.9–64.3)

23.7 (15.3–32.1)

26.3 (18.3–34.2)

 Cardiac versus other ICUs

  Cardiac (n = 35)

51.2 (43.1–60.3)

28.5 (21.2–35.8)

21.7 (14.7–28.8)

  Other (n = 96)

50.0 (44.9–55.0)

20.7 (16.4–25.0)

29.5 (25.4–33.6)

 Mean age

  < 65 (n = 38)

40.0 (32.7–47.2)*

23.2 (16.5–29.9)

35.8 (29.0–42.6)*

  ≥ 65 (n = 60)

54.0 (48.5–59.5)*

p = 0.002

22.6 (17.6–27.7)

23.8 (18.7–28.9)*

p = 0.006

 Mechanical ventilation

  ≤ 20% MV (n = 13)

53.7 (38.3–69.1)

27.1 (15.8–38.4)

24.6 (10.0–39.2)

  ≥ 80% MV (n = 38)

48.9 (40.4–57.3)

17.3 (11.5–23.0)

32.7 (25.2–40.3)

 Disease severity

  Low (n = 58)

51.3 (45.3–57.3)

21.1 (16.7–25.4)

29.2 (23.8–34.6)

  High (n = 21)

49.8 (39.3–60.3)

16.9 (9.5–24.4)

32.1 (22.7–41.4)

 Comatose patients

  Including (n = 40)

63.7 (46.7–60.8)

21.5 (15.4–27.6)

27.4 (21.3–33.5)

  Excluding (n = 65)

48.4 (42.8–54.0)

22.1 (17.4–26.9)

28.3 (23.6–32.9)

 Risk of bias/quality assessment

  Low RoB/good QA (n = 34)

53.3 (44.5–62.1)

18.1 (10.4–25.8)

33.4 (26.1–40.7)*

  High RoB/Poor QA (n = 58)

50.2 (43.1–57.2)

25.1 (19.1–31.2)

23.4 (17.8–29.0)*

p = 0.03

  1. ICU intensive care unit, RoB risk of bias, QA quality assessment
  2. *Statistically significant difference