Table 7. Additional risk factors after spinal endoscopy patients.

Risk factors	Frequency	Percent	Valid percent	Cumulative percent
Smoking
No	46	83.6	83.6	83.6
Yes	9	16.4	16.4	100.0
Total	55	100.0	100.0	–
HNP size
<10 mm	30	54.5	54.5	54.5
>10 mm	25	45.5	45.5	100.0
Total	55	100.0	100.0	–
Facet joint status
Normal	30	54.5	54.5	54.5
Degeneration	25	45.5	45.5	100.0
Total	55	100.0	100.0	–
Obesity
BMI <30	30	54.5	54.5	54.5
BMI >30 (obese)	25	45.5	45.5	100.0
Total	55	100.0	100.0	–
Other factors
None	37	67.3	67.3	67.3
Annular tear	1	1.8	1.8	69.1
Diabetes	1	1.8	1.8	70.9
Alcohol abuse	1	1.8	1.8	72.7
Fibromyalgia	1	1.8	1.8	74.5
Spondylolisthesis	1	1.8	1.8	76.4
Psych	4	7.3	7.3	83.6
Smoking	9	16.4	16.4	100.0
Total	55	100.0	100.0	–

HNP, herniated nucleus pulposus; BMI, body mass index.