From: Levels of evidence: a comparison between top medical journals and general pediatric journals
Ā | Number of studies (%) | Ā | Number of studies (%) |
---|---|---|---|
Journal | Ā | Number of Authors | Ā |
JAMA | 24 (3.0) | <3 | 17 (2.1) |
Lancet | 27 (3.4) | 3 | 89 (11.1) |
NEJM | 17 (2.1) | 4 | 116 (14.4) |
APAM | 103 (12.8) | 5 | 108 (13.4) |
J. Peds | 256 (31.8) | 6 | 125 (15.5) |
Peds | 377 (46.9) | 7 | 100 (12.4) |
Ā | Ā | >7 | 249 (31.0) |
Study type | Ā | Ā | Ā |
Therapeutic | 331 (41.2) | Number of Centers** | Ā |
Prognostic | 403 (50.1) | 1 | 605 (75.4) |
Diagnostic | 58 (7.2) | 2 | 37 (4.6) |
Economic & Decision Analysis | 12 (1.5) | 3 | 23 (2.9) |
Ā | Ā | 4 | 15 (1.9) |
Number of subjects* | Ā | 5 | 10 (1.2) |
<10 | 31 (3.9) | >5 | 112 (14.0) |
11-50 | 109 (13.6) | Ā | Ā |
51-100 | 91 (11.3) | Sub-Specialty | Ā |
101-500 | 237 (29.6) | Adolescent Medicine | 36 (4.5) |
501-1,000 | 60 (7.5) | Pediatric Cardiology | 47 (5.8) |
1,001-5,000 | 131 (16.3) | Allergy & Immunology | 39 (4.9) |
5,001-10,000 | 38 (4.7) | Clinical Pharmacology | 9 (1.1) |
10,001-50,000 | 62 (7.7) | Pediatric Critical Care | 17 (2.1) |
50,001-100,000 | 9 (1.1) | Developmental Pediatrics | 69 (8.6) |
>100,000 | 34 (4.2) | Emergency Medicine | 19 (2.4) |
Ā | Ā | Endocrinology & Metabolism | 50 (6.2) |
Region | Ā | Gastroenterology | 28 (3.5) |
North America | 529 (65.8) | Hematology/Oncology | 13 (1.6) |
South America | 7 (0.9) | Infectious Disease | 67 (8.3) |
Europe | 174 (21.6) | Neonatal/Perinatal Medicine | 68 (8.5) |
Asia | 29 (3.6) | Nephrology | 13 (1.6) |
Middle East | 18 (2.2) | Neurology | 35 (4.4) |
India | 2 (0.2) | Respirology | 57 (7.1) |
Africa | 6 (0.7) | Rheumatology | 8 (1.0) |
Australia | 39 (4.9) | Surgery | 30 (3.7) |
Ā | Ā | General Pediatrics | 141 (17.5) |
Ā | Ā | Other | 58 (7.2) |