Critical Care Nurses Inadequately Assess SAPS II Scores of Very Ill Patients in Real Life

Table 3

Reliability of nurses versus gold standard SAPS II items in overall SAPS II and SAPS II tertiles.

Variable	Kappa^a (95% CI)				Agreement^b
	Overall	Low SAPS II (6–31 points)	Medium SAPS II (32–47 points)	High SAPS II (48–111 points)	Overall	Low SAPS II (6–31 points)	Medium SAPS II (32–47 points)	High SAPS II (48–111 points)
Heart rate	0.32 (0.16–0.48)	0.28 (0.12–0.44)	0.32 (0.15–0.49)	0.22 (0.08–0.36)	0.45	0.55	0.47	0.35
Systolic blood	0.37 (0.24–0.50)	NA	0.22 (0.06–0.38)	0.20 (0.08–0.32)	0.51	0.63	0.50	0.40
pressure
Temperature	NA	NA	NA	NA	0.95	1.00	0.97	0.87
Oxygenation	0.66 (0.56–0.76)	0.33 (0.16–0.50)	0.72 (0.60–0.84)	0.54 (0.40–0.68)	0.71	0.87	0.70	0.55
Urinary output	0.77 (0.70–0.84)	0.73 (0.63–0.83)	0.80 (0.70–0.90)	0.73 (0.64–0.82)	0.58	0.52	0.67	0.55
Urea	0.71 (0.64–0.78)	0.70 (0.62–0.78)	0.71 (0.62–0.80)	0.71 (0.63–0.79)	0.67	0.57	0.75	0.67
Leucocytes	NA	NA	NA	0.40 (0.29–0.51)	0.83	0.92	0.85	0.72
Potassium	NA	NA	0.39 (0.24–0.54)	0.32 (0.19–0.45)	0.83	0.95	0.82	0.72
Sodium	NA	NA	NA	NA	0.97	0.97	0.97	0.95
Bicarbonate	0.81 (0.76–0.86)	0.77 (0.70–0.84)	0.77 (0.69–0.85)	0.76 (0.65–0.87)	0.68	0.62	0.85	0.55
Bilirubin	NA	NA	NA	NA	0.83	0.75	0.87	0.85
Glasgow Coma Scale	0.80 (0.71–0.89)	0.48 (0.19–0.77)	0.68 (0.43–0.92)	0.89 (0.80–0.98)	0.78	0.85	0.77	0.72
Age	0.98 (0.97–0.99)	0.98 (0.96–1.00)	0.99 (0.97–1.00)	0.97 (0.94–1.00)	0.93	0.92	0.95	0.92
Chronic diseases	NA	NA	NA	NA	0.93	0.97	0.92	0.87
Type of admission	NA	NA	NA	NA	0.78	0.85	0.77	0.70

^aMean weighted Kappa of the 120 nurse-registered SAPS II scores versus the gold standard.
^bMean proportions of agreement of the nurses versus the gold standard.
NA: not applicable; no reliable Kappa statistics (≤20% of results differ from norm).