For performance bias, 7 studies had both participants and outcome assessors blinded, 1 study had participants blinded only and the remaining four studies did not have any information regarding blinding. The majority of studies had low attrition bias and detection bias. There were minimal loss of subjects. The assessment of risk of bias in the included studies is in Table 2. 1 study did not report data related to number of fall and fracture rates and was therefore excluded from meta-analysis .