Skip to main content
. Author manuscript; available in PMC: 2010 Nov 7.
Published in final edited form as: Addiction. 2009 May 12;104(8):1333–1345. doi: 10.1111/j.1360-0443.2009.02596.x

Table 1.

Estimated sexual orientation distributions in the U.S. adult population, based on data from the National Epidemiologic Survey on Alcohol and Related Conditions (Wave 2, 2004–2005)

Women Men

Sexual orientation measures % (SE)a Sample Sizeb % (SE)a Sample Sizeb

Sexual identity
 Lesbian/Gay 0.7% (0.1) 145 1.1% (0.1) 190
 Bisexual 0.8% (0.1) 161 0.4% (0.1) 81
 Not sure 0.5% (0.1) 101 0.4% (0.1) 69
 Heterosexual 98.0% (0.1) 19,489 98.1% (0.2) 14,109

Sexual attraction
 Only females 1.3% (0.1) 275 95.7% (0.2) 13,704
 Mostly females 0.4% (0.1) 87 1.7% (0.1) 277
 Equally males and females 1.3% (0.1) 260 0.7% (0.1) 130
 Mostly males 4.2% (0.2) 880 0.5% (0.1) 96
 Only males 92.8% (0.3) 18,358 1.4% (0.1) 229

Sexual behavior
 Only females 0.9% (0.1) 177 94.2% (0.3) 13,534
 Both males and females 2.0% (0.1) 445 1.7% (0.1) 302
 Never had sex 2.1% (0.2) 334 1.9% (0.2) 249
 Only males 95.0% (0.2) 18,904 2.2% (0.2) 342
a

Based on weighted data.

b

Based on unweighted data.