Table 2

Areas of methodological quality recommended to be assessed in reviews by Cochrane Review Groups. Values are numbers (percentages)

Area of quality recommended

All (n = 50)

Components (n = 41)

Scales (n = 9)


Sequence generation

35 (70)

26 (63)

9 (100)

Concealment of allocation

43 (86)

41 (100)

2 (22)

Blinding of patients

42 (84)

33 (80)

9 (100)

Blinding of caregivers

33 (66)

32 (78)

1 (11)

Blinding of outcome assessors

48 (96)

39 (95)

9 (100)

Follow-up

47 (94)

38 (93)

9 (100)

Intention-to-treat analysis

21 (42)

20 (49)

1 (11)


Lundh and G√łtzsche BMC Medical Research Methodology 2008 8:22   doi:10.1186/1471-2288-8-22

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