Table 1 Number of high-quality, clinically relevant articles in the top 20 clinical journals for 2000

Cochrane Database of Systematic Reviews

1004

444

422 (95.0)

1.1

Not available

Lancet

669

3858

134 (3.5)

28.8

10.2

Journal of Clinical Oncology

445

650

100 (15.4)

6.6

8.8

BMJ

209

3428

93 (2.7)

36.9

5.3

Circulation

925

1351

92 (6.8)

14.7

10.9

Journal of Advanced Nursing

341

611

92 (15.1)

6.6

0.77

Obstetrics and Gynecology

389

478

88 (18.4)

5.4

2.0

JAMA

329

1930

87 (4.5)

22.2

16.4

New England Journal of Medicine

228

1530

83 (5.4)

18.4

29.5

Archives of Internal Medicine

340

620

81 (13.1)

7.7

6.1

Journal of the American College of Cardiology

514

707

76 (10.7)

9.3

7.1

Pediatrics

548

811

76 (9.4)

10.7

4.8

American Journal of Cardiology

631

850

72 (8.5)

11.6

2.7

American Journal of Obstetrics and Gynecology

539

704

72 (10.2)

9.8

2.5

Critical Care Medicine

340

977

70 (7.2)

14.0

3.8

Chest

589

882

66 (7.5)

13.4

2.5

Stroke

402

609

59 (9.7)

10.3

6.0

Neurology

814

1334

58 (4.3)

23.0

4.8

American Journal of Gastroenterology

474

923

56 (2.8)

16.6

Diabetes Care

263

529

55 (10.4)

9.6

5.0

Average

7.3%

13.8