Table 5.

Semen Analysis Results of Infertility Cohort. Shows the Semen Analysis results of our cohort of 209 human male infertility subjects compared to multiple lifestyle variables. Logistics regression models were run for categorical input variables and linear regression models were run for continuous input variables

Outcome: Sperm Count (million sperm/mL)
Variable	Value	Estimate	Standard error	t-value	p-value
Age	age in years	2.58	0.82	3.15	*0.0019
Exposure to heat (yes/no)	yes	9.87	11.54	0.85	0.3936
Outside/inside job	inside	36.03	44.87	0.80	0.4229
Outside/inside job	outside	38.91	45.75	0.85	0.3961
Exposure to radiation/chemicals (yes/no)	yes	14.76	11.92	1.24	0.2170
Tobacco use (yes/no)	yes	-34.99	10.85	-3.23	*0.0015
Level of alcohol use	heavy	-29.50	15.36	-1.92	*0.042
Level of alcohol use	moderate	0.93	11.73	0.08	0.9370
Level of alcohol use	rare	14.51	11.46	1.27	0.2071
Outcome: Volume (mL)
Variable	Value	Estimate	Standard error	t-value	p-value
Age	age in years	-0.04	0.02	-2.34	*0.0203
Exposure to heat (yes/no)	yes	-0.52	0.25	-2.05	*0.0418
Outside/inside job	inside	1.53	0.99	1.56	0.1212
Outside/inside job	outside	1.89	1.01	1.88	0.0610
Exposure to radiation/chemicals (yes/no)	yes	0.28	0.26	1.06	0.2922
Tobacco use (yes/no)	yes	-0.07	0.24	-0.30	0.7645
Level of alcohol use	heavy	0.27	0.34	0.80	0.4240
Level of alcohol use	moderate	0.42	0.26	1.64	0.1032
Level of alcohol use	rare	0.49	0.25	1.95	0.0529
Outcome: Motility (%)
Variable	Value	Estimate	Standard error	t-value	p-value
Age	age in years	-0.15	0.17	-0.89	0.3724
Exposure to heat (yes/no)	yes	0.38	2.40	0.16	0.8745
Outside/inside job	inside	16.28	9.33	1.74	0.0827
Outside/inside job	outside	20.74	9.52	2.18	*0.0305
Exposure to radiation/chemicals (yes/no)	yes	1.76	2.48	0.71	0.4797
Tobacco use (yes/no)	yes	-9.47	2.26	-4.19	* < 0.0001
Level of alcohol use	heavy	1.94	3.19	0.61	0.5451
Level of alcohol use	moderate	-0.47	2.44	-0.19	0.8476
Level of alcohol use	rare	2.06	2.38	0.86	0.3893

^*Denotes significance