Table 2.

Endorsement and Age Reached Sexual Orientation Developmental Milestones by Gender for Female (N=1235) and Male (N=398) Young Adults, Ages 22 to 29 Years, in the Growing Up Today Study who Reported Any Same-Gender Orientation in 2010

	Endorsement of Milestones (%, n)
Milestones	Females	Males	Females vs. Males (p-value)	Females vs. Males (Cramer’s v)
Same-gender Attraction	80.8 (995)	62.3 (246)	<.001	0.19
Other-gender attraction	97.9 (1201)	85.8 (339)	<.001	0.24
Same-gender sexual experience	61.5 (759)	64.9 (257)	0.23	0.03
Other-gender sexual experience	99.2 (1182)	84.4 (335)	<.001	0.31
Sexual minority identity	63.2 (777)	60.4 (239)	0.31	0.03
	Age Reached Milestones (age in years, M, SD)
Milestones	Females	Males	Females vs. Males (p-value)	Females vs. Males (Cohen’s d)
Same-gender attraction	16.8 (4.0)	14.9 (5.0)	<.001	0.42
Other-gender attraction	9.8 (3.4)	9.6 (3.4)	0.24	0.06
Same-gender sexual experience	18.1 (4.2)	15.2 (5.5)	<.001	0.59
Other-gender sexual experience	16.2 (2.7)	16.6 (3.4)	0.03	−0.13
Sexual minority identity	17.5 (3.9)	16.5 (4.3)	0.001	0.24

Note. Timing of sexual orientation developmental milestones is measured by age in years. Age range for same-gender attraction: 3–27 years for females, 0–27 years for males. Age range for other gender attraction: 0–26 years for females, 1–24 years for males. Age range for same-gender sexual experience: 2–27 years for females, 3–26 years for males. Age range for other gender sexual experience: 1–28 years for females, 5–26 years for males. Age range for sexual minority identity: 0–28 years for females, 4–27 years for males. Reported p-values are from chi-square tests for endorsement and t-tests for timing.