Table 1

Methodological quality of included studies

Study

Authors, date

Randomization/allocation concealment

Blinding of patients/outcomes assessment

Prior estimate of sample size

Withdrawals per group reported

ITT analysis adequate

Report of measures of precision

Data inconsistencies

Funding reported


Kanowski et al. 1996/2003 [29,36]

Yes/yes

Yes/yes

Partlya

Partlyb

Yes

Yes

No

No


Le Bars et al. 1997/2000 [30,37]

Yes/yes

Yes/unclear

Yes

Yes

Yes

Yes

No

Yes


Maurer et al. 1997 [31]

Yes/unclear

Yes/unclear

No

Yes

No

No

No

No


van Dongen et al. 2000 [34,45]

Yes/yes

Yes/yes

Yes

Yes

No

Yes

Yesc

Yes


Schneider et al. 2005 [33]

Yes/yes

Yes/yes

Yes

Yes

Yes

Yes

No

Yes


Yancheva et al 2009 [35]

Yes/unclear

Yes/unclear

No

Yes

Yes

Yes

Yes

Yes


Napryeyenko et al. 2007 [32]

Yes/unclear

Yes/unclear

Yes

Yes

Yes

Yes

No

Yes


McCarney et al. 2008 [2]

Yes/yes

Yes/yes

Partlya

Yes

Yes

Yes

No

Yes


Ihl et al. 2009

Yes/yes

Yes/yes

No

Yes

Yes

Yes

No

Yes


a: Less patients were included than planned; b: Drop-out rates were reported, but without reference to study arm; c: Multiple re-randomization schemes.

ITT = Intent-to-treat analysis.

Weinmann et al. BMC Geriatrics 2010 10:14   doi:10.1186/1471-2318-10-14

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