Table 3.

Semen parameters for the male cohort.

	Volume (ml)	Conc. (N/ml × 106)	N/Ejac. (N × 106)	Progressive motility (%)	Non-progressive motility (%)	Total motility (%)	Abnormal forms (%)
SEMEN PARAMETERS (543 CYCLES)
Mean	2.7	37	95.6	30	2.2	31.9	87
σm	0.1	1.7	4.7	0.7	0.2	0.7	6
Range	0.1–9	0.1–250	0.2–607.5	0–60	0–15	0–60	70–100

The standard uncertainty on the means is shown in parentheses, ${\sigma }_m=\frac{\sigma }{\sqrt{N}}$ (N indicates the sample number: 543).