A mixed methods study to assess the feasibility of a randomised controlled trial of invasive urodynamic testing versus clinical assessment and non-invasive tests prior to surgery for stress urinary incontinence in women: the INVESTIGATE-I study

Table 6 Total numbers necessary in definitive trial when analysis compares mean changes in ICIQ-FLUTS total score over six months

	Difference to be detected
	2	3	4
Number of RESPONSES to primary outcome	516	230	130
Number of RECRUITED patients	922	410	232
Number of eligible women APPROACHED	1182	526	298
Number of women SCREENED for eligibility	3194	1422	806

ICIQ-FLUTS, International Consultation on Incontinence modular questionnaires - Female Lower Urinary Tract Symptoms questionnaire

ISSN: 1745-6215