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Table 2 Level of evidence by proportion and mean level of evidence based on journal

From: Levels of evidence: a comparison between top medical journals and general pediatric journals

Journal

JAMA

Lancet

NEJM

APAM

J. Peds

Peds

Total

 

n

(%)

n

(%)

n

(%)

n

(%)

n

(%)

n

(%)

n

(%)

Level of evidence

              

I

8

(33.3)

16

(59.3ā–)

10

(58.8ā€”)

26

(25.2ā—†)

63

(24.6ā—†,f)

81

(21.5ā—†,f)

204

(25.4)

II

4

(16.7)

5

(18.5)

2

(11.8)

21

(20.4)

55

(21.5)

88

(23.3)

175

(21.8)

III

5

(20.8)

3

(11.1)

3

(17.6)

9

(8.7)

25

(9.8)

48

(12.7)

93

(11.6)

IV

7

(29.2)

3

(11.1ā—†)

2

(11.8)

47

(45.6ā–)

113

(44.1ā–)

160

(42.4ā–)

332

(41.3)

Ratio LOE I-II:III-IV

1.00

3.50

2.40

0.84

0.86

0.81

0.89

Mean LOE

2.46

1.74ā€ 

1.82āˆ«

2.75*

2.73*,Ā§

2.76*,Ā§

2.69

  1. ā–Higher proportion compared to ā—†(pā€‰<ā€‰0.05), ā€” Higher proportion compared to ʒ(pā€‰<ā€‰0.05).
  2. ā€ Higher LOE compared to *(pā€‰<ā€‰0.01), āˆ« Higher LOE compared to Ā§(pā€‰<ā€‰0.05).
  3. JAMA ā€“ Journal of the American Medical Association, NEJM ā€“ New England Journal of Medicine, APAM ā€“ Archives of Pediatrics and Adolescent Medicine, J. Peds ā€“ Journal of Pediatrics, Peds ā€“ Pediatrics, LOE ā€“ Level of Evidence.
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BMC Pediatrics

ISSN: 1471-2431

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