Cadmium Concentrations in Blood and Seminal Plasma: Correlations with Sperm Number and Motility in Three Male Populations (Infertility Patients, Artificial Insemination Donors, and Unselected Volunteers)

Table 7 Examination of the relationship between seminal plasma cadmium levels and categorical variables.^a

Population	Variable	Group	n	Median	Interquartile range	P
Group 1: infertility patients
	Alcohol consumption
		No Yes	88 29	0.285 0.287	\(\left. {\matrix{ {0.243-0.356} \cr {0.244-0.343} \cr } } \right\}\)	0.767, NS
	Prescription medications
		No Yes	51 70	0.286 0.281	\(\left. {\matrix{ {0.229-0.364} \cr {0.247-0.346} \cr } } \right\}\)	0.933, NS
	Vitamins and/or minerals
		No Yes	98 25	0.282 0.291	\(\left. {\matrix{ {0.242-0.350} \cr {0.254-0.343} \cr } } \right\}\)	0.875, NS
	Smoking
		No Yes	107 16	0.285 0.279	\(\left. {\matrix{ {0.243-0.347} \cr {0.257-0.356} \cr } } \right\}\)	0.899, NS
	Caffeine consumption
		No Yes	22 101	0.279 0.293	\(\left. {\matrix{ {0.229-0.332} \cr {0.244-0.350} \cr } } \right\}\)	0.440, NS
Group 2: AI donors
	Alcohol consumption
		No Yes	3 4	0.099 0.106	\(\left. {\matrix{ {0.087-0.102} \cr {0.092-0.116} \cr } } \right\}\)	0.400, NS
Group 3: General population volunteers
	Alcohol consumption
		No Yes	17 16	0.093 0.085	\(\left. {\matrix{ {0.076-0.110} \cr {0.081-0.102} \cr } } \right\}\)	0.601, NS
	Prescription medications
		No Yes	26 8	0.092 0.082	\(\left. {\matrix{ {0.081-0.116} \cr {0.075-0.094} \cr } } \right\}\)	0.310, NS
	Smoking
		No Yes	21 10	0.086 0.092	\(\left. {\matrix{ {0.073-0.105} \cr {0.082-0.118} \cr } } \right\}\)	0.473, NS

^aResults for seminal plasma and blood plasma cadmium levels are presented in micrograms per liter. P = Mann-Whitney test P value; NS, not significant.

ISSN: 1528-3658