Table 2:
2005 | 2007 | 2009 | 2011 | 2013 | 2015 | Combined | Change 2005–2015a | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
N | % | N | % | N | % | N | % | N | % | N | % | N | % | β | p | |
Heterosexual | 9326 | 92.3 | 12116 | 90.81 | 14414 | 89.66 | 22661 | 87.07 | 31662 | 86.97 | 43647 | 83.53 | 133826 | 86.19 | −0.7 | < .0001 |
No sex | 4847 | 47.49 | 6006 | 44.82 | 7529 | 47.33 | 11279 | 46.4 | 16295 | 49.96 | 23740 | 53.69 | 69696 | 50.4 | 0.38 | < .0001 |
Same Sex Only | 96 | 1.21 | 148 | 1.65 | 218 | 1.61 | 338 | 1.55 | 485 | 1.11 | 757 | 1.33 | 2042 | 1.134 | −0.25 | .0443 |
Male and Female | 123 | 1.64 | 208 | 2.32 | 240 | 2.02 | 521 | 2.04 | 759 | 2.63 | 1062 | 2 1 | 2915 | 2.21 | 0.07 | .4777 |
Different Sex Only | 4258 | 49.66 | 5754 | 51.22 | 6427 | 49.05 | 10523 | 50.01 | 14123 | 46.29 | 108088 | 42. 88 | 59173 | 46.05 | −0.38 | < .0001 |
Lesbian | 90 | 0.77 | 158 | 1.1 | 244 | 1.34 | 405 | 1.6 | 701 | 1.97 | 1292 | 1.93 | 2890 | 1.75 | 0.63 | < .0001 |
No sex | 20 | 15.37 | 29 | 16.67 | 60 | 31.62 | 123 | 24.57 | 170 | 23.18 | 312 | 26.74 | 714 | 25.24 | 0.27 | .37 |
Same Sex Only | 33 | 24.92 | 71 | 44.18 | 104 | 33.22 | 152 | 35.66 | 292 | 43.06 | 660 | 48.28 | 1312 | 43.47 | 0.88 | < .0001 |
Male and Female | 23 | 41.93 | 45 | 30.3 | 62 | 25.78 | 92 | 28.48 | 177 | 27.32 | 227 | 18.37 | 626 | 23.55 | −0.96 | .0001 |
Different Sex Only | 14 | 17.78 | 13 | 8.84 | 18 | 11.38 | 38 | 11.29 | 62 | 6.44 | 93 | 6.61 | 238 | 7.74 | −0.93 | .0116 |
Bisexual | 498 | 4.64 | 779 | 5.72 | 1285 | 6.44 | 2312 | 7.76 | 3070 | 7.78 | 5543 | 9.4 | 13387 | 8.1 | 0.57 | < .0001 |
No sex | 126 | 21.03 | 157 | 17.53 | 326 | 24.4 | 530 | 23.07 | 745 | 22.02 | 1670 | 32.34 | 3554 | 27.29 | 0.48 | .0269 |
Same Sex Only | 18 | 3.53 | 39 | 7.3 | 52 | 3.43 | 135 | 4.32 | 190 | 5.11 | 392 | 6.7 | 826 | 5.73 | 0.56 | .0187 |
Male and Female | 204 | 50.75 | 356 | 47.93 | 548 | 44.49 | 1017 | 47.55 | 1389 | 49.17 | 2186 | 38.77 | 5700 | 43.43 | −0.44 | < .0001 |
Different Sex Only | 130 | 24.68 | 227 | 27.23 | 359 | 27.68 | 530 | 25.06 | 746 | 23.7 | 1295 | 22.19 | 3307 | 23.56 | −0.27 | .0334 |
Not Sure | 253 | 2.29 | 336 | 2.38 | 500 | 2.56 | 967 | 3.58 | 1334 | 3.27 | 2586 | 5.15 | 5976 | 3.97 | 0.83 | < .0001 |
No sex | 126 | 46.25 | 167 | 46.62 | 249 | 48.23 | 533 | 49.43 | 728 | 50.72 | 1451 | 57.64 | 3254 | 54.05 | 0.75 | < .0001 |
Same Sex Only | 5 | 1.37 | 4 | 0.85 | 18 | 2.86 | 28 | 3.67 | 60 | 3.8 | 118 | 2.74 | 233 | 2.98 | 0.28 | .4019 |
Male and Female | 38 | 17.61 | 67 | 23.53 | 95 | 22.18 | 150 | 21.28 | 238 | 20.24 | 437 | 15.82 | 1025 | 18.04 | −0.47 | .0062 |
Different Sex Only | 84 | 34.77 | 98 | 28.99 | 138 | 26.73 | 256 | 25.62 | 308 | 25.24 | 580 | 23.8 | 1464 | 24.93 | −0.22 | .3976 |
Linear trend based on trend analyses using logistic regression model controlling for grade and race/ethnicity, p <.05