Table 3 The difference between the manual data recordings by nurses and by the automatic statistical calculations.

From: Exploring the clinical relevance of vital signs statistical calculations from a new-generation clinical information system

Difference nHR − pHR (n = 1025)

Mode

Mean

Median

Maximum

Minimum

Mean

0.86

− 0.68

0.05

− 15.4

9.9

P (H0: mean = 0)

< 0.001

< 0.001

0.964

< 0.001

< 0.001

Lower limit (95% CI) of agreement

− 8

− 9.5

− 8.5

− 34.8

− 8.7

Upper limit (95% CI) of agreement

9.7

8.2

8.6

3.9

28.5

Difference nRR − iRR (n = 716)

Mode

Mean

Median

Maximum

Minimum

Mean

0.63

− 2.9

− 1.1

− 20.1

6.3

P (H0: mean = 0)

0.055

< 0.001

0.003

< 0.001

< 0.001

Lower limit (95% CI)

− 15.4

− 18.5

− 16.6

− 56.5

− 5.6

Upper limit (95% CI)

16.7

12.7

14.5

16.3

18.2

Difference nSpO2 − SpO2 (n = 983)

Mode

Mean

Median

Maximum

Minimum

Mean

− 0.12

0.09

− 0.07

− 0.88

2.52

P (H0: mean = 0)

0.004

< 0.001

0.172

< 0.001

< 0.001

Lower limit (95% CI)

− 1.72

− 1.58

− 1.67

− 2.9

− 5.06

Upper limit (95% CI)

1.49

1.75

1.52

1.14

10.1

  1. nHR heart rate recorded by nurses, nRR respiratory rate recorded by nurses, nSpO2 oxygen saturation recorded by nurses, pHR hourly calculation of the pulse-based heart rate, iRR hourly calculation of the respiratory rate by impedance, SpO2 hourly calculation of the oxygen saturation. Data calculated using the Bland–Altman method. The differences between the nHR and electrical heart rate (eHR) are not provided because of their similarity to those of the pHR.
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