Table 4. Frequency table of endoscopic techniques employed by responding spine surgeons.

Type of endoscopic technique	Frequency	Percent	Valid percent	Cumulative percent
Transforaminal
Missing response	128	43.8	43.8	43.8
Transforaminal	164	56.2	56.2	100.0
Total	292	100.0	100.0
Interlaminar
Missing response	170	58.2	58.2	58.2
Interlaminar	122	41.8	41.8	100.0
Total	292	100.0	100.0
Full endoscopic
Missing response	189	64.7	64.7	64.7
Full endoscopic	103	35.3	35.3	100.0
Total	292	100.0	100.0
Over the top
Missing response	252	86.3	86.3	86.3
Over the top	40	13.7	13.7	100.0
Total	292	100.0	100.0