Condition	Variable	Sub-variable	Freq.	%	MeanSDFI	±sd	t-test	P-value	SDFI < 25%		SDFI ≥ 25%		χ²	P-value	OR	95% CI
Condition	Variable	Sub-variable	Freq.	%	MeanSDFI	±sd	t-test	P-value	Freq.	%	Freq.	%	χ²	P-value	OR	95% CI
Surgical history	Testicular torsion	Yes	2	1.8	45.5	21.9	0.72	0.30	0	0.0	2	3.0	020	0.65	0.00	undefined
	Testicular torsion	No	109	98.2	34.3	18.7	0.72	0.30	45	100.0	64	97.0	020	0.65	0.00	undefined
	Undescended testis	Yes	0	0.0	-	-	-	-	0	0.0	0	0.0	-	-	-	-
	Undescended testis	No	111	100.0	34.5	18.7	-	-	45	100.0	66	100.0	-	-	-	-
	Varicocele	Yes	6	5.4	32.3	7.9	0.62	0.28	1	2.2	5	7.6	0.64	042	0.28	0.03, 2.46
	Varicocele	No	105	94.6	34.6	19.1	0.62	0.28	44	97.8	61	92.4	0.64	042	3.61	0.41, 31.96
Medical history	Hypertension	Yes	35	31.5	36.8	19.8	0.96	0.17	14	31.1	21	31.8	0.01	0.94	0.97	0.43, 2.19
	Hypertension	No	76	68.5	33.4	10.2	0.96	0.17	31	68.9	45	68.2	0.01	0.94	1.03	0.46, 2.34
	Diabetes	Yes	4	3.6	36.8	7.9	0.55	0.30	1	2.2	3	4.5	0.02	0.90	0.48	0.05, 4.74
	Diabetes	No	107	96.4	34.4	19.0	0.55	0.30	44	97.8	63	95.5	0.02	0.90	2.10	0.21, 20.81
	Sexually transmitted Illness	Yes	21	18.6	36.4	18.6	0.51	0.31	8	17.8	13	19.7	0.06	0.80	0.88	0.33, 2.34
	Sexually transmitted Illness	No	90	81.1	34.1	18.7	0.51	0.31	37	82.2	53	90.3	0.06	0.80	1.13	0.43, 3.01
	Mumps	Yes	6	5.4	37.5	25.3	0.31	0.39	2		4		0.00	1.00	0.72	0.13, 4.11
	Mumps	No	105	94.6	34.3	18.4	0.31	0.39	43		62		0.00	1.00	1.39	0.24, 7.91