Table 3.

Multivariable logistic regression analyses of risk factors for pregnancy outcome pregnant vs. non pregnant or live birth vs. non live birth

Characteristic	Odds ratio for pregnancy	95% Cl	p value	Odds ratio for live birth	95% CI	p value
Treatment
ICI	Reference			Reference
IUI	2.5	1.3 – 5.0	<0.001	3.0	1.4 – 6.4	0.006
COS-ICI	3.3	1.7 – 6.6	0.009	3.4	1.6 – 7.5	0.002
COS-IUI	6.6	3.4 – 12.7	<0.001	5.1	2.4 – 10.9	<0.001
Women coffee or tea drinking
Never	Reference			Reference
Current	1.2	0.6 – 2.4	0.608	1.0	0.5 – 2.0	0.898
Past (>1 month ago)	4.0	1.6 – 10.2	0.004	3.1	1.2 – 8.1	0.023
Women alcoholic drinking
Never	Reference			Reference
Current	1.2	0.7 – 1.9	0.508	0.9	0.5 – 1.5	0.715
Past (>1 month ago)	1.9	1.1 – 3.2	0.017	2.1	1.2 – 3.7	0.007
Women exposure to pesticide
No	Reference
Yes	0.6	0.3 – 1.1	0.103
Unknown	0.2	0.1 – 0.9	0.033

ICI, intracervical insemination.

IUI, intrauterine insemination.

COS-ICI, controlled ovarian stimulation and intracervical insemination.

COS-IUI, controlled ovarian stimulation and intrauterine insemination.

Note: Only variables having a significant association with pregnancy are included in the final model and used for the calculation for the odds ratio from the logistic regression (using backward selection).