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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.