Table 1.

Comparison of the survival rate of completely immotile testicular spermatozoa before and after cryopreservation

Patients	Before cryopreservation			After cryopreservation			Survival index
	No. of sperm (n)	No. of live sperm (n)	Survival rate (%)	No. of sperm (n)	No. of live sperm (n)	Survival rate (%)
1	104	71	68.27	111	75	65.57	0.99
2	109	94	86.24	120	79	65.83	0.76
3	118	67	56.78	115	58	50.43	0.89
4	130	93	71.54	115	73	63.48	0.89
5	121	69	57.02	46	18	39.13	0.69
6	107	61	57.01	117	55	47.01	0.82
7	87	48	55.17	74	26	35.14	0.64
8	104	58	55.76	108	43	39.81	0.71
9	105	63	60.00	81	38	46.91	0.78
10	109	60	55.05	102	36	35.29	0.64
11	104	58	55.75	108	43	39.81	0.71
12	119	64	53.78	136	48	35.29	0.66
13	136	76	55.88	117	50	42.74	0.76
14	100	50	50.00	83	36	43.37	0.87
15	143	87	60.84	132	73	55.30	0.91
16	135	62	45.93	119	44	36.97	0.80
17	113	57	50.44	121	47	38.84	0.77
18	122	51	41.80	108	34	31.48	0.75
19	134	62	46.27	116	42	36.21	0.78
20	129	75	58.14	131	65	49.62	0.85
21	145	81	55.86	140	68	48.57	0.87
22	154	83	53.90	146	65	44.52	0.83
23	137	59	43.07	122	39	31.97	0.74
24	131	57	43.51	120	46	38.33	0.88
25	121	49	40.50	106	32	30.18	0.75
Total	3017	1655	54.86	2794	1233	44.13	0.80