Table 2.

Selected characteristics of the US population of adult men 20 y and older by categories of levels of total testosterone and total cholesterol in NHANES 1988–1991, 1999–2004, and 2013–2014

NHANES 1988–1991, 1999–2004, 2013–2014	Testosterone T1 (N = 1243)		Testosterone T2 (N = 1241)		Testosterone T3 (N = 1255)			Low cholesterol (N = 2506)		High cholesterol (N = 1234)
	n	%	n	%	n	%	p-value	n	%	n	%	p-value
Age, mean (SE)	59.93	0.50	47.11	0.47	42.66	0.44	<0.01	43.71	0.34	52.4	0.42	<0.01
Race/Ethnicity												<0.01
NH White	546	50.00	646	51.23	597	43.04	-	1139	73.34	650	80.12
NH Black	236	21.61	257	20.38	390	28.12	0.04	643	11.89	240	7.78
Hispanic	310	28.39	358	28.39	400	28.84	0.49	724	14.78	344	12.11
Smoking status												<0.01
Never smoked	517	47.39	591	46.87	527	38.02	-	1124	44.88	511	43.75
Former smoker	387	35.47	381	30.21	298	21.5	0.29	621	25.61	445	32.75
Current smoker	187	17.14	289	22.92	561	40.48	<0.01	759	29.50	278	23.5
Hypertension												<0.01
No	540	50.99	779	63.49	996	73.67	-	1708	75.16	607	52.83
Yes	519	49.01	448	36.51	356	26.33	<0.01	724	24.84	599	47.17
Physically active												0.08
No	394	36.08	446	35.37	537	38.72	-	964	36.04	413	31.21
Yes	698	63.92	815	64.63	850	61.58	0.08	1542	63.96	821	68.79
Alcohol, mean (SE)	13.66	0.94	14.95	0.97	17.76	1.17	0.02	16.44	0.81	13.99	0.85	0.5
BMI, mean (SE)	30.86	0.20	28.16	0.13	25.24	0.11	<0.01	27.35	0.11	28.88	0.15	<0.01