highly significantP < 0.001
For all tremor items, there was a highly significant difference ( P < 0.001) between the OFF‐ and ON‐stimulation condition: for item 3.17 resting tremor amplitude n = 251, Z = −12.932, P < 0.001, for item 3.18 resting tremor constancy n = 270, Z = −12.906, P < 0.001, for item 3.15 postural tremor n = 215, Z = −10.343, P < 0.001 and for item 3.16 kinetic tremor n = 144, Z = −8.594, P < 0.001.