Table 1. Demographic and clinical characteristics of patients.

Clinical characteristics	n	%	Mean±SD	Median	Min-Max
Age (year)			48.6±2.2	48	24-73
Sex
Female	15
Male	18
Lumbar disc herniation level
L2-L3	4	12,1
L3-L4	4	12,1
L4-L5	16	48,5
L5-S1	9	27,3
Muscle weakness +
0/5 motor strength	30	90,9
2/5 motor strength	1	3,03
3/5 motor strength	1	3,03
4/5 motor strength	1	3,03
Incontinence +	27	81,8
Sensory deficit +	31	93,9
Time from initation of symptoms to admission			48.5±45.5	24	3-150
Time from admission to surgery			7.6±5.2	8	1-24
SD: Standard deviation; Min: Minimum; Max: Maximum.