Correlation between the female pelvic floor biomechanical parameters and the severity of stress urinary incontinence

Table 3 Examine the difference of selected VTI parameters between PGI-S subgroups of SUI patients

VTI parameter				mild SUI according to the PGI-S score (mean ± SD)	severe SUI according to the PGI-S score (mean ± SD)	P
No.	Description	Interpretation	Units	mild SUI according to the PGI-S score (mean ± SD)	severe SUI according to the PGI-S score (mean ± SD)	P
16	The maximum gradient at the perineal body (posterior)	Strength of Level III support (tissue deformation up to 25 mm)	kPa/mm	0.94 ± 1.30	0.22 ± 0.14	0.02
22	Pressure response from a selected location (irregularity 1) at the left side	Hard tissue on the left vaginal wall	kPa	4.96 ± 1.44	3.51 ± 1.55	0.03
23	Pressure response from a selected location (irregularity 2) at the left side	Hard tissue on the left vaginal wall	kPa	5.3 ± 2.44	3.23 ± 1.35	0.01
24	Pressure response from a selected location (irregularity 3) on the right side	Hard tissue on the right vaginal wall	kPa	6.24 ± 1.59	3.97 ± 1.85	0.01
38	Maximum pressure change on the right side at voluntary muscle contraction	Contraction strength of specific pelvic muscle	kPa	7.14 ± 4.64	3.25 ± 3.11	0.02
39	Maximum pressure value on the right side at voluntary muscle contraction	Specified pelvic muscle contractive capability and integrity	kPa	12.48 ± 6.21	6.33 ± 4.44	0.01

To examine the difference between the subgroups of selected VTI parameters in mild/severe incontinence complaints according to the PGI-S question. To assess incontinence severity, the total score of PGI-S is divided into two degrees: scores 1 to 2 are assigned as mild, and 3 to 4 as severe. Only that parameter is shown for which a significant difference could be found (P < 0,05)

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