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Table 1 Methodological quality of the included studies based on the 12-item scoring system

From: Effect of whole-body vibration on reduction of bone loss and fall prevention in postmenopausal women: a meta-analysis and systematic review

Study Randomized adequatelya Allocation concealed Patient blinded Care provider blinded Outcome assessor blinded Acceptable dropout rateb ITT analysisc Avoided selective reporting Similar baseline Similar or avoided cofactor Patient complianced Similar timing Quality
Verschueren et al., 2004 [11] Yes Yes Yes No Yes Yes No Yes Yes Yes Yes Yes Moderate
Rubin et al., 2004 [20] Yes Yes Yes No Yes Yes Yes Yes Yes Yes Yes Yes High
Iwamoto et al., 2005 [22] Yes No Yes No Yes Yes Yes Yes Yes Yes Yes Yes Moderate
Gusi et al., 2006 [12] Yes No Yes No Yes Yes No Yes Yes Yes Yes Yes Moderate
Stengel et al., 2011 [14] Yes Yes Yes No Yes Yes Yes Yes Yes Yes Yes Yes High
Stengel et al., 2011 [15] Yes Yes Yes No Yes Yes Yes Yes Yes Yes Yes Yes High
Lai et al.,2013 [13] Yes Yes Yes No Yes Yes Yes Yes Yes Yes Yes Yes High
Leung et al., 2014 [21] Yes Yes Yes No Yes No Yes Yes Yes Yes No Yes High
  1. aOnly if the method of sequence made was explicitly introduced could get a “Yes”; sequence generated by “Dates of Admission” or “Patients Number” receive a “No”
  2. bDropout rate <20 % could get a “Yes”, otherwise “No”
  3. cITT = intention-to-treat, only if all randomized participants were analyzed in the group, they were allocated to receive a “Yes”
  4. dMore than 75 % patients accept respective treatment for at least 6 weeks means “Yes”, otherwise “No”