Table 2.

Birth cohort differences in sexual identity development milestones

Birth cohort Age at time of survey (2015)	Group A Before 1960 >55		Group B 1960–69 46 – 55		Group C 1970–79 36 – 45		Group D 1980–89 26 – 35		Group E 1990–96 19 – 25
	Mdn	IQR	Mdn	IQR	Mdn	IQR	Mdn	IQR	Mdn	IQR	K-W	p	Post hoc
(all participants) How old were you when you first…	n = 197		n = 191		n = 206		n = 282		n = 147
felt sexually attracted to people of the same sex?	12	7–14	11	8–13	11	7.25–13	12	8–13	11	10–13	2.76	0.60
admitted to yourself that you were gay/bisexual?	19	15–25	18	15–22	17	14–21	15	13–18	14	13–16	136.23	< .001	A ≠ C, D, E; B ≠ D, E; C ≠ D ≠ E
had consensual sex with a male	19	14–25	18	14–21	18	15–21	17	15–19	16	14–18	33.64	< .001	E ≠ A, B, C, D; D ≠ C, A; A ≠ B
told someone else that they were gay/bisexual	22	19–33	21	18–28	19	17–23	17	15–20	16	17–17.25	245.97	< .001	A ≠ B ≠ C ≠ D ≠ E
Gay identified men, n = 974	n = 185		n = 185		n = 194		n = 273		n = 137
felt sexually attracted to people of the same sex?	12	7–13	11	8–13	11	7–13	12	8–13	11	10–13	2.63	0.62
admitted to yourself that you were gay/bisexual?	19	15–25	18	15–22	17	14–21	15	13–18	14	13–16	129.79	< .001	E ≠ A, B, C, D, D ≠ A, B, C; A ≠ C
had consensual sex with a male	19	14–24	18	14–21	18	15–31	17	15–19	17	14.25–18	28.63	< .001	E ≠ A, B, C; A ≠ D
told someone else that they were gay/bisexual	22	19–30	21	18–28	19	17–23	17	15–20	16	14–17	237.34	< .001	E ≠ A, B, C, D; 'D ≠ A, B, C; A ≠ C
Bisexual identified men, n = 48	n = 12		n = 6		n = 12		n = 9		n = 9
felt sexually attracted to people of the same sex?	13	1.25–15.75	11.5	8.75–16.5	12	8–13	15	9–19.5	11	9.25–13.5	3.2	0.52
admitted to yourself that you were gay/bisexual?	32.5	7.25–44.25	17	1.5–21.25	15	14–22	17	9–20.5	14.5	13–18.25	10.6	0.03	A ≠ E
had consensual sex with a male	20	25.75–45	16	10–20.25	18	14–23	18	11–21	15	12–18.25	6	0.2
told someone else that they were gay/bisexual	31	6.25–46.75	21.5	5.75–34.5	21	15–25	18	12–22	14.5	2.75–18.25	9.4	0.051