Table 2. Associated factors
Factor	CPR/cycle	p	OR	superior CI	inferior CI
Age ˂38 years	9.4vs.5.4%	0.030	1.819	1.052	3.147
Cervical factor	13.5vs.6.6%	0.001	2.194	1.380	3.488
Infertility ≤3 years	10.2vs.4.8%	0.003	2.240	1.295	3.875
Infertility I/II	6.8vs.9.2%	0.175
IUI cycles ≤2	8.5vs.5.8%	0.264
Gonadotropins	9.7vs.5.5%	0.019	1.846	1.100	3.097
Follicles 1 vs ≥2	4.4vs.11.6%	<0.00	2.873	1.697	4.864
Pre-cap <5 millions	3.3vs.8.8%	0.134
Post-cap <5 millions	5.2vs.8.6%	0.134
Post-cap <30 millions	7.4vs.9.7%	0.194
Post-cap <50 millions	7.8vs.10.4%	0.222
Swim-up/gradients	9.4vs.8.2%	0.582
Double/simple IUI	16.7vs.7.9%	0.088
Pre/post ovulation	8.2vs.5.4%	0.146
Easy/hard IUI	9.7vs.4.4%	0.014	2.341	1.168	4.693
Endometrium<9 mm	6.5vs.9.8%	0.058