Table 1. Associations between mean Sal-T and sexual behaviors and sexual function among men.

	% of sample [weighted]												Denominators
	%	95% CI	Mean Sal-T Pmol/L	SE	Crude Coeff.*	95% CI	adjusted Coeff. 1*	95% CI	adjusted Coeff. 2*	95% C.I	adjusted Coeff. 3*	95% C.I	unwt	wt
All men	100%		223.5	3.33	-	-	-	-	-	-	-	-	1599	1866
Sexual function
Problems achieving/maintaining an erection for at least 3 months in past yr^
No	86.8	[84.6, 88.7]	233.5	3.90	-	-	-	-	-	-	-	-	1010	1315
Yes	13.2	[11.3, 15.4]	203.4	8.39	−28.60	[−46.53,−10.67]	1.21	[−15.65,18.08]	0.55	[−16.34, 17.44]	1.73	[−15.44, 18.89]	198	200
						p =.0018		p =.888		p =.949		p =.843
Lacked interest in having sex for at least 3 months in past yr^
No	84.8	[82.2, 87.0]	229.7	3.90	-	-	-	-	-	-	-	-	1011	1285
Yes	15.2	[13.0, 17.8]	228.5	8.89	−2.77	[−20.01, 14.48]	0.98	[−13.78,15.74]	2.53	[−12.05, 17.12]	3.55	[−10.29, 17.38]	197	231
						p =.753		p =.897		p =.733		p =.615
Lacked enjoyment when having sex for at least 3 months in past yr^
No	95.2	[93.3, 96.6]	229.2	3.70	-	-	-	-	-	-	-	-	1156	1442
Yes	4.8	[3.4, 6.7]	235.7	15.00	9.48	[−21.40,40.36]	−2.10	[−30.62, 26.41]	0.01	[−28.13, 28.14]	−2.50	[−29.28, 24.28]	52	73
Distressed or worried about sex life: agree strongly/agree						p =.821		p =.876		p =.747		p =.864
No	88.6	[86.6, 90.3]	224.9	3.49	-	-	-	-	-	-	-	-	1354	1602
Yes	11.4	[9.7, 13.4]	227.1	9.85	−2.28	[−22.02, 17.46]	−1.38	[−18.73,15.96]	−2.87	[−20.25, 14.52]	1.46	[−15.27, 18.20]	196	206
						p =.547		p =.885		p =.100		p =.855
Overall sexual function^
Normal	79.8	[77.0, 82.2]	232.1	4.06	-	-	-	-	-	-	-	-	929	1214
Low	20.2	[17.8, 23.0]	219.5	7.71	−10.57	[−27.36, 6.23]	−0.47	[−15.52,14.58]	−0.54	[−15.38, 14.30]	0.72	[−13.67, 15.12]	283	308
						p =.218		p =.951		p =.943		p =.921
Sexual behavior
Masturbation
Last occasion of masturbation
In last 7 days	49.7	[46.4, 52.9]	244.3	4.36	-	-	-	-	-	-	-	-	746	917
Between 7 days and 4 weeks	17.9	[15.7, 20.2]	216.5	6.38	−29.11	[−44.20,−14.02]	−6.05	[−20.40, 8.29]	−4.38	[−18.88, 10.12]	−6.26	[−20.43, 7.92]	290	244
Between 4 weeks and 1 year	15.2	[12.9, 17.9]	218.1	10.08	−33.52	[−50.65,−16.39]	−1.15	[−16.21,13.92]	0.16	[−15.10, 15.42]	−0.26	[−15.46, 14.95]	239	215
Longer than 1 year ago/never	17.2	[15.0, 19.7]	180.1	7.49	−62.88	[−79.07, −46.68]	−25.16	[−42.06, −8.26]	−23.34	[−39.89, −6.78]	−21.82	[−36.97, −6.67]	280	436
						p <.0001		p =.0248		p =.0343		p =.0269
No. of occasions of masturbation in past 7 days
0	50.6	[47.4, 53.9]	204.5	4.75	−23.22	[−41.98, −4.46]	−8.25	[−24.94, 8.43]	−7.36	[−23.90, 9.17]	−7.16	[−22.94, 8.63]	809	917
1	13.5	[11.4, 15.9]	223.9	8.74	-	-	-	-	-	-	-	-	189	244
2	11.9	[10.1, 13.9]	227.5	7.06	1.94	[−20.47, 24.34]	−7.93	[−29.04,13.17]	−8.01	[−28.87, 12.84]	−9.79	[−29.65, 10.07]	189	215
3+	24.1	[21.5, 26.8]	262.6	6.37	36.23	[15.17, 57.29]	9.21	[−9.21, 27.64]	7.86	[−10.52, 26.25]	9.94	[−7.38, 27.27]	359	436
						p <.0001		p =.0800		p =.1508		p =.0485
Sexual behavior in the past 4 weeks
No. of occasions of sex#
0−2	54.9	[51.7, 57.9]	211.9	4.16	-	-	-	-	-	-	-	-	903	964
3−4	18.5	[16.1, 21.2]	237.0	7.32	25.51	[9.22, 41.79]	11.71	[−2.94, 26.35]	14.96	[−0.17, 30.09]	10.80	[−3.92, 25.51]	234	325
5+	26.6	[23.8, 29.6]	242.9	7.33	26.45	[11.36, 41.55]	7.00	[−6.96, 20.97]	10.12	[−4.23, 24.47]	7.59	[−6.16, 21.35]	352	467
						p =.0003		p =.2626		p =.122		p =.299
Vaginal sex
No	36.2	[33.5, 39.0]	215.7	4.95	-	-	-	-	-	-	-	-	692	669
Yes	63.8	[61.0, 66.5]	230.3	4.43	16.38	[3.92, 28.85]	6.33	[−4.37, 17.03]	16.10	[4.03, 28.16]	13.44	[1.53, 25.35]	884	1179
						p =.0101		p =.246		p =.0090		p =.0271
Received oral sex#
No	60.3	[57.3, 63.3]	212.7	3.82	-	-	-	-	-	-	-	-	1024	1112
Yes	39.7	[36.7,42.7]	243.8	5.68	27.79	[15.17,40.41]	8.69	[−2.96, 20.33]	10.29	[−1.46, 22.04]	11.20	[−0.05, 22.46]	549	732
						p <.0001		p =.1436		p =.0860		p =.0510
Gave oral sex#
No	59.8	[56.8, 62.8]	215.3	3.75	-	-	-	-	-	-	-	-	1019	1103
Yes	40.2	[37.2, 43.2]	239.4	5.70	22.09	[9.54, 34.64]	3.95	[−7.09, 15.00]	6.16	[−5.18, 17.50]	7.84	[−3.01, 18.68]	555	741
						p =.0006		p =.483		p =.287		p =.1565
Anal sex#
No	95.3	[93.8, 96.4]	223.4	3.43	-	-	-	-	-	-	-	-	1504	1756
Yes	4.7	[3.6, 6.2]	258.2	12.88	33.90	[8.00, 59.81]	15.31	[−5.93, 36.54]	14.15	[−7.21, 35.52]	15.02	[−5.37, 35.41]	70	87
						p =.0104		p =.1576		p =.194		p =.1487
Genital contact without intercourse#
No	53.5	[50.5, 56.6]	216.2	4.30	-	-	-	-	-	-	-	-	930	986
Yes	46.5	[43.4, 49.5]	235.1	4.83	17.97	[6.03, 29.90]	2.53	[−8.56, 13.62]	6.39	[−5.04, 17.82]	6.54	[−4.42, 17.50]	642	856
Sexual behavior in the past 5 years
						p =.0032		p =.655		p =.273		p =.242
Number of sexual partners#
0	9.3	[7.8, 11.0]	207.7	10.35	-	-	-	-	-	-	-	-	209	169
1	58.0	[55.1,60.9]	210.6	3.80	5.78	[−15.97, 27.52]	−0.55	[−18.22,17.13]	9.28	[−10.50, 29.07]	3.49	[−16.93, 23.91]	828	1057
2	10.6	[8.9, 12.6]	244.6	9.76	40.95	[12.84, 69.06]	12.05	[−10.99, 35.09]	17.17	[−7.06, 41.39]	10.95	[−13.32, 35.23]	161	193
3−4	10.8	[9.1, 12.7]	261.4	10.91	58.75	[28.69, 88.80]	14.25	[−11.46, 39.96]	20.23	[−6.45, 46.92]	13.98	[−12.80,40.76]	179	196
5+	11.3	[9.5, 13.3]	268.5	11.10	62.72	[33.56,91.87]	15.83	[−9.92, 41.58]	18.86	[−7.42,45.15]	12.60	[−14.15, 39.35]	184	206
						p <.0001		p =.232		p =.466		p =.702
Concurrency&
No	86.7	[84.6, 88.5]	220.3	3.43	-	-	-	-	-	-	-	-	1338	1580
Yes	13.3	[11.5, 15.4]	262.7	9.58	40.30	[21.20, 59.41]	24.24	[7.48, 41.01]	22.27	[5.46, 39.09]	20.87	[4.47, 37.26]	226	243
						p <.0001		p =.0046		p =.0095		p =.0127
Paid for sex
No	96.3	[95.0, 97.4]	225.2	3.41	-	-	-	-	-	-	-	-	1512	1771
Yes	3.7	[2.6, 5.0]	230.3	19.59	5.12	[−33.88, 44.12]	5.87	[−30.34,42.07]	5.31	[−31.67, 42.30]	10.66	[−24.62, 45.94]	56	67
						p =.7969		p =.7506		p =.778		p =.554
Same-sex partner[s]
No	97.0	[96.0, 97.8]	222.8	3.40	-	-	-	-	-	-	-	-	1537	1823
Yes	3.0	[2.2, 4.0]	251.9	14.74	25.12	[−5.01,55.24]	24.8	[0.47, 49.12]	20.88	[4.00, 45.76]	22.30	[−0.75, 45.34]	58	56
						p =.102		p =.0457		p =.0999		p =.058
Sexual behavior, lifetime
Number of sexual partners#
0/1	14.7	[12.6, 17.1]	229.8	7.72	-	-	-	-	-	-	-	-	237	265
2	8.5	[7.0, 10.3]	224.2	11.40	1.36	[−25.55, 28.27]	7.23	[−14.60, 29.05]	8.01	[−13.0, 29.02]	4.73	[−15.71, 25.18]	129	153
3−4	15.7	[13.6, 18.2]	232.7	7.49	8.33	[−12.17, 28.84]	9.28	[−8.91, 27.46]	10.68	[−7.88, 29.23]	9.72	[−9.00, 28.44]	237	285
5−9	25.4	[22.9, 28.0]	231.5	6.47	6.49	[−12.14, 25.12]	15.56	[−1.00, 32.13]	17.23	[0.62, 33.85]	17.74	[1.04−34.44]	375	459
10+	35.8	[32.8, 38.8]	218.4	5.31	−7.33	[−24.45, 9.79]	5.12	[−10.61,20.85]	4.65	[−11.35, 20.64]	6.25	[−9.62, 22.12]	566	647
						p =.330		p =.404		p =.254		p =.252
Ever had same sex experience with genital contact
No	93.3	[91.7, 94.6]	223.3	3.46	-	-	-	-	-	-	-	-	1472	1752
Yes	6.7	[5.4, 8.3]	229.2	10.69	4.31	[−17.57, 26.19]	6.40	[−11.15,23.95]	2.66	[−15.12, 20.44]	0.95	[−15.72, 17.62]	123	126
						p =.699		p =.475		p =.951		p =.911
Sexual attraction
Ever felt sexually attracted to: Opposite sex only	93.2	[91.8, 94.3]	222.1	3.45									1437	128
Any same-sex attraction	6.8	[5.7, 8.2]	239.0	12.15	9.78	[−10.70, 30.26]	7.81	[−8.37, 23.99]	3.29	[−12.90, 19.45]	0.59	[−14.76, 15.94]	155	1877
						p =.349		p =. 3439		p =.690		p =.940
Attitudes
One night stands
Other	82.1	[79.5, 84.3]	218.4	3.44	-	-	-	-	-	-	-	-	1300	1544
‘Not wrong at all’	17.9	[15.7, 20.5]	246.0	8.20	24.95	[8.98, 40.92]	18.52	[5.15, 31.89]	16.82	[3.69, 29.96]	14.42	[1.70, 27.13]	298	338
						p =.0022		p =.0067		p=.0121		p =.026
Non-exclusivity in marriage
Other	46.5	[43.4, 49.6]	222.7	4.84	-	-	-	-	-	-	-	-	758	877
‘Always wrong’	53.5	[50.4, 56.6]	224.2	4.44	−0.79	[−13.05, 11.47]	−13.10	[−23.76, −2.44]	−13.70	[−24.20,−3.19]	−10.01	[−20.07, 0.05]	841	1008
						p =.899		p =.0161		p =.0415		p =.0512
‘Men have a naturally higher sex drive than women’
Other	90.5	[88.7, 92.1]	223.2	3.54	-	-	-	-	-	-	-	-	1450	1707
Strongly agree	9.5	[7.9, 11.3]	226.1	10.28	2.67	[−19.20, 24.55]	−2.70	[−23.00,17.61]	−0.97	[−21.45, 19.51	2.09	[−17.90, 22.09]	149	179
						p =.811		p =.795		p =.926		p =.837
‘It is natural for people to want sex less as they get older’
Other	95.7	[94.3, 96.7]	223.9	3.41	-	-	-	-	-	-	-	-	1527	1804
Strongly agree	4.3	[3.3, 5.7]	214.5	13.53	−6.43	[−34.72, 21.86]	4.23	[−16.57, 25.02]	5.08	[−15.85, 26.01]	9.10	[−9.58, 27.77]	72	82
						p =.656		p =.690		p =.634		p =.339

unwt = unweighted denominators, wt = weighted denominators. SE = standard error of mean. Denominator: all men excluding those taking medication for epilepsy or prostate disease, or who received treatment for a testicular or pituitary condition in the past year.

^*Linear regression. Adjusted coeff 1 = adjusted for age and age-squared; adjusted coeff2 = adjusted for age, age-squared, season, and relationship status; adjusted coeff3 = adjusted for age, age-squared, season, relationship status, BMI, and self-reported general health;

^#opposite- and/or same-sex

^{^}Only asked of those who had sex in the past year, those who did not have sex in the past year were excluded from the denominator. &Overlap between any partners in past 5 years