Table 1.

Comparison between retest groups regarding the numerical variables of the study.

	Retest		Mann–Whitney test (p)	Result
	0 – positive	1 – negative
Age
Mean	62.4	58.7
Standard deviation	15.6	12.5	0.382	0 = 1
N	17	47
Number of maneuvers
Mean	1.88	1.46
Standard deviation	0.60	0.89	0.003	0 > 1
N	17	46