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Table 2 Summary of tools’ information, indices, predictive performance and quality

From: Grading and assessment of clinical predictive tools for paediatric head injury: a new evidence-based approach

Tool

Tool Grade

Tool Information

Study Indices

Predictive Performance

Study Quality Indicators

Country

Year

Citations

Studies

Citation Index

Publication Index

Literature Index

Sensitivity

Specificity

Development Method

Patient Sample Size

Number of Authors

Journal Impact

Dedicated Support

PECARN [49]

A2

USA

2009

885

24

88.5

2.40

21.24

0.97

0.59

R

42,412

32

53.25

Yes

CHALICE [43]

B2

UK

2006

309

15

23.8

1.15

4.64

0.98

0.86

R

22,772

6

3.26

Yes

CATCH [51]

C1

USA

2006

319

12

24.5

0.92

3.83

0.98

0.50

R

3866

14

6.80

Yes

NEXUS II [50, 54]

C1

USA

2005

124

6

8.9

0.43

0.74

0.99

0.15

R

1666

8

5.70

Yes

Palchak [52]

C2

USA

2003

248

3

15.5

0.19

0.74

1.00

0.46

R

2043

10

5.35

No

Haydel [47]

C3

USA

2003

118

1

7.4

0.06

0.12

1.00

0.24

R

175

5

5.35

No

Atabaki [39]

C3

USA

2008

111

1

10.1

0.09

0.11

1.00

0.46

R

1000

8

5.73

No

Buchanich [40]

C3

USA

2007

4

1

0.3

0.08

0.00

1.00

0.40

R

97

1

1.00

No

Da Dalt [41]

C0

Italy

2006

85

1

6.5

0.08

0.09

1.00

0.87

M

3806

8

1.79

No

Greenes [44, 45]

C0

USA

1999

237

2

11.9

0.10

0.47

0.53

0.72

M

422

2

5.70

No

Klemetti [48]

C0

Finland

2009

18

1

1.8

0.10

0.02

0.94

0.29

M

485

4

1.07

No

Quayle [53]

C0

USA

1997

291

1

13.2

0.05

0.29

0.44

0.85

M

322

7

5.70

No

Dietrich [42]

C0

USA

1993

220

1

8.5

0.04

0.22

1.00

0.17

M

324

5

5.35

No

Güzel [46]

C0

Turkey

2009

17

1

1.7

0.10

0.02

0.69

0.43

M

916

6

1.00

No

  1. Citation Index (Average Annual Citations) = (number of citations/age of development study), Publication Index (Average Annual Studies) = (number of studies/age of development study), Literature Index (Citations and Publications) = (number of citations X number of studies). Age of development study = (current year – year of tool’s development). Development method: R Recursive Partitioning, M Multivariate Logistic Regression