“…The majority of the included trials (eight studies) enrolled low back pain patients with radiculopathy. 18,31,35,37,38,40,41 Four studies recruited chronic low back pain patients, 25,28,34,39 whereas one study included acute low back pain patients, 32 one study included acute, subacute, and chronic low back pain patients, 27 one study recruited non-specific low back pain patients, 33 and one trial included facet syndrome patients 23 . However, two studies did not provide detailed information on the low back pain subclassification.…”