Table 3. Clinical variables, admission, pre-operation and operation time in patients with improved and non improved muscle strength.

	Patients with same muscle strength (n=11)					Patients with improved muscle strength (n=22)
Clinical characteristics	n	%	Mean±SD	Median	Min-Max	n	%	Mean±SD	Median	Min-Max	p
Age (year)			53.5±12.0	52	37-73			46.0±11.7	47	24-63	0.14*
Sex
Female	6	54,5				9	40,9				0.45**
Time from initation of			76.4±53.3	78	8-150			33.5±33.1	24	3-120	0.02*
symptoms to admission
Time from admission to surgery	7.5±3.8			8	2-15			7.5±5.8	7	1-24	0.63*
Time from initation to surgery	83.8±11.0			80	13-165			41.0±22.0	27	7-144	0.037*
SD: Standard deviation; Min: Minimum; Max: Maximum; * Mann Whitney U test, ** Chi-square test.