DRKS00022557.

Study name	Effect of stimulation frequency in dorsal root ganglion stimulation (DRG Stimulation)
Methods	Cross‐over trial
Participants	Chronic intractable pain, n = 50
Interventions	DRGS  Arm 1:   Frequency 40 Hz for 4 days, wash‐out for 3 days Arm 2:   Frequency 60 Hz for 4 days, wash‐out for 3 days Arm 3:   Frequency 80 Hz for 4 days, wash‐out for 3 days Arm 4:   Sham stimulation for 4 days, wash‐out for 3 days Arm 5:   Ordinary stimulation parameters for 4 days, wash‐out for 3 days
Outcomes	Pain intensity (VAS) Medication use
Starting date	01/04/2021
Contact information	Philipp  Slotty neuromodulation@med.uni‐duesseldorf.de
Notes	No external funding