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Table 7 Total numbers of recordings of parameters by trial arm (intention-to-treat analysis)

From: Early warning scoring systems versus standard observations charts for wards in South Africa: a cluster randomized controlled trial

Parameter

Number of recordings

Mean rank

Z value

Pvalue

Respiratory rate

Total number

Median

Range

Intervention arm (N = 57)

73

0

0

70.33

−5.42

<0.001

Control arm (n = 57)

2

0

0-2

44.67

Heart rate

Intervention arm (N = 57)

285

4

1-16

51.08

−2.09

0.036

Control arm (n = 57)

346

5

1-16

63.92

  

Oxygen saturation

Intervention arm (N = 57)

10

0

0-3

60.04

−1.75

0.080

Control arm (n = 57)

2

0

0-1

54.96

Systolic blood pressure

Intervention arm (N = 57)

325

6

1-18

48.24

−3.03

0.002

Control arm (n = 57)

414

7

1-19

66.76

Temperature

Intervention arm (N = 57)

134

2

1-10

65.69

−2.742

0.006

Control arm (n = 57)

113

2

0-7

49.31

Level of consciousness

Intervention arm (N = 57)

134

1

0-10

70.39

−4.44

<0.001

Control arm (n = 57)

38

1

0-2

44.61

Urine output

Intervention arm (N = 57)

93

2

0-6

58.60

0-.373

0.709

Control arm (n = 57)

87

1

0-4

56.40

  1. P values determined using the Mann-Whitney U test.