TABLE 4—

Summary of Changes in Sexual Activity and Risk Index Values and Overall Changes Attributable to Sexual Activity and Contraceptive Use: National Survey of Family Growth, 1995 and 2002

	15–19 Years, Change, %	15–17 Years, Change, %	18–19 Years, Change, %	White, Non-Hispanic, Change, %	Black, Non-Hispanic, Change, %	Hispanic, Change, %
Sexual activity	−6.4	−16.9	0.0	−4.2	−12.0	−24.5
Contraceptive risk index	−34.0	−45.9	−26.8	−44.3	−22.1	−13.4
Overall pregnancy risk index	−38.3	−55.2	−26.7	−46.7	−31.5	−34.2
Overall change attributable to sexual activity (95% CI)	14 (−18, 34)	23 (−6, 45)	0 (−99, 37)	7 (−28, 26)	34 (−125, 172)	66 (−110, 236)
Overall change attributable to contraceptive use (95% CI)	86 (66, 118)	77 (55, 106)	100 (63, 199)	93 (74, 128)	66 (−72, 225)	34 (−136, 210)

Note. CI = confidence interval.