Table 1. Sociodemographic characteristics of participants returning for follow-up visits, The P18 Study, New York City, NY.

	Baseline (n = 598)	6 Month (n = 458)		12 Month (n = 442)		18 Month (n = 425)
	% (n)	% (n)	p	% (n)	p	% (n)	p
Race			.97		.81		.91
Hispanic	38.3 (229)	37.6 (172)		38.7 (171)		38.8 (165)
White non-Hispanic	28.9 (173)	30.3 (139)		29.2 (129)		27.8 (118)
Black non-Hispanic	14.9 (89)	15.9 (73)		16.1 (71)		16.9 (72)
Mixed race	9.4 (56)	8.1 (37)		7.0 (31)		7.8 (33)
Asian	4.8 (29)	4.6 (21)		5.7 (25)		4.9 (21)
Other	3.7 (22)	3.5 (16)		3.4 (15)		3.8 (16)
SES			.82		.94		.87
Lower	9.4 (56)	7.6 (35)		8.1 (36)		7.8 (33)
Lower middle	24.1 (144)	25.5 (117)		23.8 (105)		25.6 (109)
Middle	37.1 (222)	36.9 (169)		39.4 (174)		38.4 (163)
Upper middle	25.3 (151)	24.9 (114)		24.7 (109)		24.0 (102)
Upper	4.2 (25)	5.0 (23)		4.1 (18)		4.2 (18)
Foreign born status			.95		.66		.82
US born	89.0 (532)	89.1 (408)		89.8 (397)		89.4 (380)
Foreign born	11.0 (66)	10.9 (50)		10.2 (45)		10.6 (45)
School enrollment status1					.06
Enrolled in school	85.6 (512)	–		80.1 (354)		–
Not enrolled in school	14.4 (86)	–		18.6 (82)		–
Sexual orientation			.31		.004		.02
Exclusively homosexual	41.5 (248)	43.4 (199)		46.2 (204)		46.7 (200)
Predominantly homosexual, only  incidentally heterosexual	29.4 (176)	30.8 (141)		33.0 (146)		30.4 (129)
Predominantly homosexual, but more  than incidentally heterosexual	13.0 (78)	11.6 (53)		8.8 (39)		9.9 (42)
Equally heterosexual and homosexual	11.7 (70)	9.6 (44)		6.3 (28)		8.7 (37)
Predominantly heterosexual, but more  than incidentally homosexual	2.5 (15)	3.5 (16)		3.8 (17)		2.6 (11)
Predominantly heterosexual, only  incidentally homosexual	1.8 (11)	0.4 (2)		1.4 (6)		0.5 (2)
Exclusively heterosexual	0.0 (0)	0.7 (3)		0.5 (2)		0.9 (4)

¹Assessed only at the 12 month follow-up visit