Table 1.
Sexual activity among all women aged 15–19, and contraceptive method use among sexually-active women aged 15–19, by NSFG survey year, 2007–2014
| Survey year |
||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 2007 |
2009 |
2012 |
2014 |
Test for change over time |
||||||
| % | 95% CI | % | 95% CI | % | 95% CI | % | 95% CI | p value (Linear terma) | p value (Quadratic terma) | |
| All women 15–19years | (N = 1,085) | (N = 1,199) | (N = 1,037) | (N = 1,010) | ||||||
| Sexually active in last 3 months | 31 | (27, 35) | 33 | (30, 37) | 30 | (25, 35) | 31 | (27,36) | .737 | .768 |
| Sexually active women 15–19 years | (N = 366) | (N = 403) | (N = 320) | (N = 308) | ||||||
| Number of methods used at last sex | ||||||||||
| No method | 22 | (17,28) | 13 | (9,19) | 14 | (9, 20) | 12 | (8,18) | .012 | .262 |
| One or more methods | 78 | (72,83) | 87 | (81,91) | 86 | (80, 91) | 88 | (82,92) | .012 | .262 |
| Two or more methods | 24 | (18,30) | 30 | (23, 38) | 34 | (26,43) | 33 | (26,41) | .040 | .301 |
| Method type | ||||||||||
| IUD and implant | 1 | (0.5,4) | 4 | (2,9) | 3 | (1,9) | 7 | (4,13) | .023 | .718 |
| Injectable | 6 | (4,10) | 10 | (7,14) | 7 | (4,11) | 8 | (5,13) | .815 | .405 |
| Pill | 26 | (21,32) | 33 | (27, 40) | 35 | (27,43) | 27 | (20,34) | .775 | .023 |
| Patch and ring | 5 | (3,9) | 4 | (2,7) | 1 | (0.2, 2) | 3 | (0.7,15) | .478 | .402 |
| Condom | 49 | (42, 56) | 50 | (43, 58) | 55 | (48, 63) | 55 | (45,64) | .212 | .881 |
| Alone | 29 | (24, 34) | 25 | (19, 32) | 30 | (22, 38) | 30 | (21,39) | .667 | .493 |
| With another methodb | 19 | (14,26) | 26 | (20, 33) | 25 | (18, 34) | 24 | (18,32) | .299 | .288 |
| Withdrawal | 15 | (10,22) | 18 | (13, 25) | 20 | (14,28) | 26 | (20,33) | .020 | .775 |
| Alone | 8 | (5,12) | 9 | (5,15) | 8 | (5,13) | 9 | (5,14) | .912 | .841 |
| With another methodc | 7 | (4,11) | 9 | (5,15) | 12 | (6, 21) | 17 | (12,25) | .004 | .813 |
IUD = intrauterine devices; NSFG = National Survey of Family Growth.
a
Centered to the mean of survey year.
b
Includes condom use in combination with any of the following methods: IUD, injectable, implant, pill, patch, ring, and withdrawal.
c
Includes withdrawal use in combination with any of the following methods: IUD, injectable, implant, pill, patch, ring, and condom.