Table 1. Analysis of variables between groups with unilaterally invisible tubal ostium.

Variables	Control group	Study group	P value
Age			0.2674
Mean ± SD	32.47±4.71	31.60±4.86
Median [min, max]	32.0 [23, 43]	31.0 [22, 46]
Gravidity			0.7429
Mean ± SD	3.38±1.75	3.32±1.76
Median [min, max]	3.0 [0, 10]	3.0 [0, 11]
Parity			0.7031
Mean ± SD	0.74±1.43	0.58±0.81
Median [min, max]	0.0 [0, 9]	0.0 [0, 4]
Abortion			0.6715
Mean ± SD	2.47±1.49	2.47±1.74
Median [min, max]	2.0 [0, 7]	2.0 [0, 10]
Menstruation			0.0851
Normal menses	10 (13.51%)	7 (9.33%)
Hypomenorrhea	62 (83.78%)	60 (80.00%)
Amenorrhea	2 (2.70%)	8 (10.67%)
Total	74 (100.00%)	75 (100.00%)
Preoperative cornual adhesions			<0.0001
No adhesion	30 (40.54%)	9 (12.00%)
Unilateral adhesions	43 (58.11%)	65 (86.67%)
Bilateral adhesions	1 (1.35%)	1 (1.33%)
Total	74 (100.00%)	75 (100.00%)
Preoperative AFS score			0.0969
Mean ± SD	8.58±1.68	9.12±1.59
Median [min, max]	8.0 [5, 12]	10.0 [6, 12]
Causes of IUA			0.5939
Dilatation and curettage	64 (86.49%)	67 (89.33%)
Other uterine cavity operation	10 (13.51%)	8 (10.67%)
Total	74 (100.00%)	75 (100.00%)