Difficulties in recruitment for a randomized controlled trial involving hysterosalpingography

Table 1 Unavoidable and avoidable reasons for non-participation

Unavoidable reasons	N = 467	%
Exclusion criteria	460	73
Androgenic factor	173
Tubal testing performed in the past	114
Pregnant before randomization	91
Women older than 37 years at first visit	55
Anovulation	27
Patient's reason	7	1
Personal circumstances	7
Avoidable reasons	N = 165	%
Doctor's reason	19	3
Eligible, but not approached	19
Patient's reason	146	23
Refused to participate	72¹
No show-up after initial visit	50
Indecisiveness	19
Language barrier	5

ISSN: 1742-4755