TABLE 3.

Repeated Measures of Sexual-Orientation Disparities in Frequent Engagement Over Time in Cancer-Related Risk Behaviors Stratified by Sex in the Growing Up Today Study, United States, 1999–2010

Variable	Young Women, OR (95% CI)			Young Men, OR (95% CI)			Sex by Sexual Orientation Interaction, P
	Lesbian (n|=|80)	BI (n|=|136)	MH (n|=|961)	Gay (n|=|101)	BI (n|=|24)	MH (n|=|245)
Overall high cancer risks (≥|2 of 3 categories)a	2.0** (1.2, 3.3)	1.9** (1.3, 2.8)	1.6*** (1.3, 1.9)	1.1 (0.6, 1.8)	1.3 (0.6, 2.7)	1.0 (0.7, 1.4)	.047
[ems]High substance use (≥|2 of 3 risks)	2.3** (1.3, 4.2)	2.6*** (1.7, 3.9)	2.4*** (2.0, 2.9)	1.1 (0.7, 2.0)	0.8 (0.3, 1.8)	1.0 (0.7, 1.3)	<.001
[ems]High diet and physical activity (≥|2 of 3 risks)	1.5 (0.9, 2.3)	2.0*** (1.5, 2.8)	1.3*** (1.1, 1.5)	1.5 (1.0, 2.2)	2.2* (1.2, 4.2)	1.1 (0.9, 1.5)	.757
[ems]High ultraviolet (≥|2 of 4 risks)	0.9 (0.7, 1.2)	0.8 (0.6, 1.1)	0.9** (0.8, 1.0)	1.2 (1.0, 1.6)	1.2 (0.7, 2.2)	1.0 (0.8, 1.2)	.135
Substance use risks, in past year
[ems]Cigarettes (smoked|≥|5 daily)	2.3* (1.2, 4.5)	3.9*** (2.5, 6.0)	2.6*** (2.2, 3.3)	1.5 (0.8, 2.8)	1.4 (0.4, 4.7)	1.6** (1.2, 2.3)	.017
[ems]Other tobacco use	1.3 (0.7, 2.3)	3.1*** (2.1, 4.5)	2.0*** (1.6, 2.4)	0.7 (0.4, 1.1)	0.7 (0.3, 1.4)	0.8 (0.6, 1.2)	<.001
[ems]Binge drinking (≥|6 times)	1.2 (0.9, 1.7)	1.2 (1.0, 1.6)	1.5*** (1.3, 1.7)	1.0 (0.7, 1.4)	1.1 (0.5, 2.6)	0.9 (0.7, 1.1)	<.001
Diet and physical activity risks
[ems]Overweight or obese BMIb	1.0 (0.6, 1.9)	1.8** (1.2, 2.6)	1.2 (1.0, 1.4)	0.6 (0.3, 1.0)	1.8 (0.6, 5.5)	0.8 (0.6, 1.1)	.275
[ems]Vomited (≥|1 monthly per year)	1.3 (0.6, 2.9)	1.6 (0.9, 2.8)	1.7*** (1.3, 2.3)	3.2* (1.1, 9.4)	4.4 (0.6, 29.7)	1.2 (0.3, 4.2)	.345
[ems]Physically inactive in past year	1.0 (0.7, 1.4)	1.6** (1.2, 2.1)	1.3*** (1.2, 1.5)	1.7** (1.2, 2.4)	1.9 (1.0, 3.4)	1.6*** (1.2, 2.0)	.105
Ultraviolet radiation risks, past summer, except tanning booth
[ems]Sun exposed (sometimes, often, always)	1.0 (0.7, 1.4)	0.8 (0.6, 1.0)	1.0 (0.9, 1.1)	0.9 (0.7, 1.3)	1.0 (0.5, 2.0)	0.9 (0.8, 1.1)	.647
[ems]Sunburned (≥|5 times)	1.1 (0.7, 1.9)	1.1 (0.7, 1.7)	0.9 (0.8, 1.1)	0.8 (0.5, 1.3)	0.6 (0.2, 1.4)	1.0 (0.7, 1.3)	.272
[ems]Used sunblock (never or seldom)	1.3 (0.9, 1.7)	1.0 (0.8, 1.3)	1.0 (0.9, 1.1)	1.1 (0.8, 1.5)	1.2 (0.6, 2.3)	1.0 (0.8, 1.2)	.602
[ems]Used tanning booth (≥|10 per year)	0.4*** (0.3, 0.7)	0.4*** (0.3, 0.6)	0.6*** (0.6, 0.7)	4.7*** (3.0, 7.4)	1.3 (0.4, 4.9)	0.6 (0.3, 1.1)	<.001
Ever sexually transmitted infection	0.8 (0.4, 1.6)	1.8** (1.2, 2.7)	1.7*** (1.5, 2.1)	3.5*** (2.0, 6.4)	…c	1.4 (0.7, 2.4)	.012b

Notes. BI|=|bisexual; BMI|=|body mass index; CI|=|confidence interval; MH|=|mostly heterosexual; OR|=|odds ratio (completely heterosexual is the group [0] to which each sexual-minority group [1] is compared). Other tobacco use includes smoking cigars or chewing tobacco. All risks were assessed over 7 waves (1999, 2000, 2001, 2003, 2005, 2007, and 2010), except for cigarette use (all waves except 2000), other tobacco use (1999, 2000, and 2001), physically inactive (1999, 2001, and 2005), sun exposed (2001, 2003, 2005, and 2007), sunburned and use of sunblock (1999, 2000, 2001, 2003, 2005, and 2007), use of tanning booth (1999, 2001, 2003, 2005, 2007, and 2010, although 2010 data were not used), and sexually transmitted infection (1999, 2005, and 2007). Adjustments were made for age in 1999, ethnicity/race, and sibling clusters.

^aSexually transmitted infection is not included, given its measurement: ever had a sexually transmitted infection at each of its 3 assessments. The findings for sexually transmitted infection appear in the last row.

^bBMI was computed according to the Centers for Disease Control and Prevention algorithms.^95–98

^cNo male bisexuals reported a sexually transmitted infection. Thus, male bisexuals were excluded from the analyses because of model nonconvergence.

^*P|<|.05;

^**P|<|.01;

^***P|<|.001.