Hi folks.
I need help with some data. It is very basic but I have been out os school for longer than I wish to divulge.
I wish to obtain data from a a systematic review. The paper has presented a bar chart but I can't interpret the numbers from the scale and the SD. The appendix has the studies they used in the RCTs or whatever type of study they used. They give the number of patients in the study, the mean bone gain in mm and SD.
I need to know how to combine several of these studies to obtain the weighted mean and SD so I can place figures on the bar chart.
Many thanks for your help in advance.
J
I need help with some data. It is very basic but I have been out os school for longer than I wish to divulge.
I wish to obtain data from a a systematic review. The paper has presented a bar chart but I can't interpret the numbers from the scale and the SD. The appendix has the studies they used in the RCTs or whatever type of study they used. They give the number of patients in the study, the mean bone gain in mm and SD.
I need to know how to combine several of these studies to obtain the weighted mean and SD so I can place figures on the bar chart.
Many thanks for your help in advance.
J