Extracting data from figures with software was faster, with higher interrater reliability than manual extraction

Does transcranial electrical stimulation enhance corticospinal excitability of the motor cortex in healthy individuals? A systematic review and meta‐analysis

“…When the mean ± SD was reported graphically rather than numerically (110 of 126 studies), values were estimated from the graphs using Plot digitizer software (Joseph, ). This Java‐based software converts the plotted values into a numerical format in a highly reliable way (Jelicic Kadic et al ., ) and has been employed in a large number of other meta‐analytical studies (Bastani & Jaberzadeh, ; Butler et al ., ; Vaseghi et al ., ; Chung et al ., ; Hill et al ., ; Pisegna et al ., ). When the standard error (SE) was reported, the SD was estimated using the formula SD = SE√ n ( n = number of subjects in each group) (Higgins & Green, ).…”

Yoga treatment for chronic non-specific low back pain

“…When both endpoint and change data were available, we used endpoint data in our primary analysis. In cases where neither endpoint nor change data were available, one author (RV) used Plot Digitizer to extract endpoint values from figures (Jelicic 2016). We used these values together with the baseline SD in our primary analysis.…”

Electrical Stimulation of Dorsal Root Ganglion in the Context of Pain: A Systematic Review of In Vitro and In Vivo Animal Model Studies

“…Data from studies in which results were presented graphically, or for those in which statistical measures of dispersion were not presented clearly, were obtained through e‐mail to corresponding author. If there was no reply after the second e‐mail reminder, data were obtained from graphs using Plot Digitizer Software .…”