Forest plot of RCTs investigating step counter use in HbA1c (%) in T2D patients. The sample size represents the number of participants completing the trials. Summary estimates were analyzed with a random-effects model. CI, confidence interval; HbA1c, glycosylated hemoglobin A1c; PA, physical activity; RCTs, randomized controlled trials; T2D, type 2 diabetes; WMD, weighted mean difference.
Qiu et al. BMC Medicine 2014 12:36 doi:10.1186/1741-7015-12-36