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. Author manuscript; available in PMC: 2007 Aug 14.

Published in final edited form as: J Res Adolesc. 2006 Mar;16(1):59–68. doi: 10.1111/j.1532-7795.2006.00120.x

TABLE 1.

Differences Between Initiators of Oral Sex/Vaginal Intercourse and Non-Initiators, Mean (SD)

	Oral Sex		Vaginal Intercourse
Variable	No (n = 979)	Yes (n = 120)	No (n = 1,011)	Yes (n = 88)
Female (%)	88.3	11.7	91.2	8.8
Male (%)	89.8	10.2	92.8	7.2
White (%)	88.2	11.8	91.5	8.5
Nonwhite (%)	90.9	9.1	93.1	6.9
Age	13.91 (1.40)^**	15.28 (0.86)	13.94 (1.40)^**	15.40 (.81)
Religiosity	.03 (1.06)^**	−.27 (0.94)	.03 (1.06)^**	−.35 (.87)
Bonding to school	.09 (1.33)^**	−.67 (1.67)	.06 (1.36)^**	−.63 (1.60)
Heavy drinking	.02 (0.12)^**	.17 (0.30)	.02 (0.12)^**	.20 (.32)
Parental communication	3.63 (1.95)	3.93 (1.89)	3.62 (1.95)^**	4.18 (1.82)
Negative psychosocial expectancies	.13 (1.03)^**	−1.01(1.06)	.10 (1.05)^**	−1.12(1.00)
Negative health expectancies	.07 (1.22)^**	−.62 (1.13)	.06 (1.22)^**	−.69(1.17)
Positive expectancies	−.01 (1.16)	.08 (1.10)	−.01 (1.16)	.06 (1.08)
Peer oral sex	.56 (0.62)^**	1.71 (0.83)	.59 (0.66)^**	1.71 (.82)
Peer sexual intercourse	.41 (0.57)^**	1.32 (0.87)	.42 (0.57)^**	1.57 (.85)
Peer approval oral sex	2.46 (1.13)^**	3.45 (0.75)	2.49 (1.13)^**	3.48 (.72)
Peer approval sexual intercourse	2.14 (1.17)^**	3.18 (1.01)	2.15 (1.17)^**	3.40 (.80)

Note. Within-group (by sexual behavior) t-test comparisons were conducted.

^**

p<.01.