Computer-assisted sperm analysis parameters in young fertile sperm donors and relationship with age

Figures & data

Table 1. CASA parameters in sperm donors according to age. Motile sperm percentages are presented according to WHO [1999] guidelines. Results are presented as means (standard deviation).

	<35 years (n = 182 ejaculates)	36–40 years (n = 116 ejaculates)	41–44 years (n = 64 ejaculates)	ANOVA
total sperm concentration (millions/ml)	62.3 (51.8)	63.8 (42.2)	62.92 (39.1)	NS
total sperm count per ejaculate (millions)	195.4 (150)	201 (122.9)	195.5 (100.2)	NS
motile sperm proportion (grade a + b + c) (%)	59.9 (15.9)	59.36 (16.8)	54.92 (20.4)	NS
progressive motile sperm proportion (grade a) (%)	35.2 (12.2)	33.3 (11.7)	32.5 (13.2)	NS
ALH (µm)	3.36 (0.6)	3.38 (0.7)^a	3.19 (0.7)^a	P < 0.001
VSL (µm/s)	46.8 (9.1)	46.6 (10.2)	46.2 (8.3)	NS
VCL (µm/s)	79.7 (13.7)	80.1 (15.5)^a	76 (14.2)^a	P = 0.01
VAP (µm/s)	55.6 (10)	55.6 (11)	54 (9.6)	NS
LIN (VSL/VCL)	60.1 (6.1)	57.9 (6.2)	61.5 (5.7)	P = 0.002
STR (VSL/VAP)	83.3 (3.8)	82 (4.2)	82.3 (4)	P = 0.003

^aP < 0.05 (Kruskal-Wallis test or Student's t test)