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Table 1 Characteristics of included systematic reviews of prognosis studies

From: Systematic reviews of prognosis studies: a critical appraisal of five core clinical journals

Field Number of primary studies included in reviews ANN INT MED BMJ CIRCUL JAMA STROKE ALL
Cardiovascular diseases <10 0 6 3 4 3 16
11–25 6 4 10 8 2 30
>25 2 6 7 6 1 22
Neurologya and psychiatry <10 0 0 0 0 10 10
11–25 0 5 0 3 18 26
>25 0 0 1 2 11 14
Oncology <10 2 0 0 1 0 3
11–25 1 3 0 1 0 5
>25 1 1 0 3 0 5
Endocrinology <10 1 2 2 0 0 5
11–25 0 1 0 1 0 2
>25 0 1 1 0 0 2
Otherb <10 4 2 1 5 0 12
11–25 7 6 0 9 0 22
>25 6 9 0 8 1 24
TOTAL   30 46 25 51 46 198
  1. aIncludes studies that had non-embolic stroke as a main outcome; embolic stroke has been included under cardiovascular diseases
  2. bIncludes studies of rheumatology, pediatrics, gastroenterology, geriatrics, nephrology, allergy/immunology, critical care, and infectious diseases