Table 3

Fleiss kappa calculations for overall diagnosis and five features of CAM algorithm with 95% CIs

Overall diagnosis*CAM feature
Acute changeFluctuationInattentionDisorganised thinkingAltered LOC
All sites
(n=27)
0.88
(0.85 to 0.92)
0.62
(0.59 to 0.67)
0.40
(0.37 to 0.43)
0.60
(0.56 to 0.63)
0.79
(0.76 to 0.83)
0.58
(0.55 to 0.62)
Site 1
(n=10)
0.94
(0.11 to 1.0)
0.46
(0.36 to 0.56)
0.46
(0.37 to 0.56)
0.60
(0.56 to 0.64)
0.74
(0.64 to 0.84)
0.62
(0.53 to 0.72)
Site 2
(n=4)
0.72
(0.45 to 0.98)
0.23
(−0.04 to 0.5)
0.26
(−0.01 to 0.53)
0.45
(0.35 to 0.55)
0.72
(0.46 to 0.99)
0.44
(0.17 to 0.70)
Site 3
(n=4)
0.85
(0.33 to 1.0)
1.0
(0.33 to 1.0)
0.67
(0.40 to 0.93)
0.60
(0.56 to 0.63)
0.85
(0.33 to 1.0)
0.73
(0.33 to 1.0)
Site 4
(n=3)
1.0
(0.5 to 1.0)
0.41
(0.36 to 0.79)
0.23
(−0.15 to 0.61)
−0.08
(−0.46 to 0.29)
0.81
(0.50 to 1.0)
0.57
(0.19 to 0.95)
Site 5
(n=3)
0.81
(0.5 to 1.0)
1.0
(0.50 to 1.0)
0.40
(0.02 to 0.78)
0.16
(−0.04 to 0.37)
0.81
(0.50 to 1.0)
0.71
(0.5 to 1.0)
  • *Per reference standard: 33% (3/9) observed cases with delirium.

  • CAM, Confusion Assessment Method; LOC, level of consciousness.