Table 2.

Percent Standardized Differences (d) Between Virginity Pledgers and Non-pledgers Before and After Propensity Score Weighting

	Before weighting			After weighting
Covariate	Pledger (M or %)	Non-pledger (M or %)	d	Pledger (M or %)	Non-pledger (M or %)	d
Age, y	15.31	15.19	7.48	15.31	15.29	1.33
Female	61.1%	45.3%	32.07	61.1%	58.4%	5.51
White	81.2%	78.3%	7.22	81.2%	80.7%	1.27
African American	8.2%	9.4%	−4.24	8.2%	8.8%	−2.15
Hispanic	6.6%	7.7%	−4.27	6.6%	6.9%	−1.20
Other	4.1%	4.6%	−2.45	4.1%	3.6%	2.60
Lives with both parents	85.4%	80.6%	12.80	85.4%	83.6%	4.98
Has at least one older sibling	68.2%	64.1%	8.67	68.2%	67.7%	1.07
Parent education	3.90	3.85	3.43	3.90	3.88	1.76
Parental monitoring	4.33	4.05	43.76	4.33	4.31	2.53
Perceives parent disapproval of sex	98.7%	91.9%	32.55	98.7%	98.7%	0.00
Has mostly older friends	13.3%	11.5%	5.46	13.3%	13.8%	−1.46
Religiosity	3.74	3.09	85.61	3.74	3.73	2.08
Sensation-seeking	3.95	3.78	17.90	3.95	3.93	2.43
Deviant behavior	7.19	7.68	−28.07	7.19	7.21	−1.04
Self-esteem	3.49	3.39	22.11	3.49	3.48	1.12
Perceived prevalence of sex among peers	1.61	1.85	−30.10	1.61	1.63	−2.29
Perceived peer approval of sex	2.00	2.67	−59.14	2.00	2.06	−5.20
Participation in activities or clubs	1.70	1.10	64.15	1.70	1.72	−2.15
Intention to marry before age 22	10.2%	10.9%	−2.28	10.2%	10.5%	−0.98
Intention to have children before age 22	2.7%	4.6%	−10.14	2.7%	2.7%	0.00
Low sex self-efficacy	1.98	1.80	25.96	1.98	1.99	−0.81
Sexual knowledge	0.22	0.14	8.58	0.22	0.18	3.94
Positive sex expectancies	−0.28	0.04	−50.85	−0.28	−0.26	−3.99
Perceived risk of unprotected sex	3.10	3.04	12.31	3.10	3.11	−1.29