Table 4. Multivariate logistic regression analysis of variables affecting retrieval rate of the bilaterally invisible fallopian tube ostia.

Effect	Degree of freedom	Estimate	Standard error	Wald Chi-square	95% CI	P value
Type 3 effect analysis
Group	1			57.7457		<0.0001
Preoperative cornual adhesions	2			35.5981		<0.0001
Maximum Likelihood estimate
Group: study group	1	4.4384	0.5841	57.7457		<0.0001
Preoperative cornual adhesions
Unilateral adhesions	1	2.7325	0.7962	11.7783		0.0006
Bilateral adhesions	1	3.8469	0.6448	35.5981		<0.0001
Odds ratio estimate
Group: study group vs. control group		84.638			26.940–265.905
Preoperative cornual adhesions
Unilateral adhesions vs. no adhesion		15.372			3.228–73.189
Bilateral adhesions vs. no adhesion		46.849			13.240–165.778