TABLE 1. Unadjusted weighted prevalence of health-related behaviors, by letter grades earned among high school students — National Youth Risk Behavior Survey, United States, 2015.
| Health-related behavior | % (95% CI) |
|||
|---|---|---|---|---|
| Mostly A’s | Mostly B’s | Mostly C’s | Mostly D’s/F’s | |
|
Dietary behavior
| ||||
| Ate breakfast on all 7 days* |
45.4 (40.8–50.1) |
35.2 (33.2–37.4) |
28.7 (26.2–31.2) |
18.8 (15.3–22.8) |
| Ate fruit or drank 100% fruit juices one or more times per day* |
68.2 (65.0–71.2) |
62.8 (60.8–64.7) |
60.5 (57.1–63.7) |
52.5 (47.9–57.2) |
| Ate vegetables one or more times per day† |
68.0 (64.6–71.2) |
60.0 (57.6–62.4) |
55.1 (52.0–58.2) |
54.2 (49.9–58.5) |
| Drank one or more glasses per day of milk* |
42.8 (38.3–47.5) |
35.7 (33.5–37.9) |
33.8 (31.0–36.8) |
28.2 (23.8–33.2) |
| Did not drink a can, bottle, or glass of soda or pop§ |
34.2 (30.1–38.6) |
24.8 (22.3–27.4) |
17.7 (15.3–20.4) |
13.1 (10.2–16.7) |
|
Physical activity behavior
| ||||
| Physically active at least 60 minutes per day on 5 or more days¶ |
51.5 (47.2–55.8) |
50.7 (47.8–53.6) |
43.9 (40.9–47.0) |
38.3 (33.8–43.1) |
| Played on at least one sports team** |
66.9 (59.9–73.3) |
58.9 (56.2–61.5) |
48.6 (45.7–51.5) |
36.7 (30.9–43.0) |
| Attended physical education classes on one or more days†† |
49.9 (43.1–56.7) |
50.5 (43.8–57.1) |
53.9 (48.8–58.8) |
59.4 (52.2–66.1) |
|
Sedentary behavior
| ||||
| Watched television 3 or more hours per day§§ |
18.3 (15.2–21.9) |
25.2 (23.3–27.3) |
30.6 (28.2–33.2) |
35.3 (30.2–40.7) |
| Played video or computer games or used a computer 3 or more hours per day¶¶ |
36.0 (32.2–40.0) |
41.6 (39.2–44.1) |
47.3 (44.0–50.5) |
53.4 (49.1–57.7) |
|
Substance use
| ||||
| Currently drank alcohol*** |
24.3 (20.8–28.1) |
34.6 (32.6–36.7) |
40.4 (36.7–44.3) |
51.6 (46.1–57.0) |
| Currently used marijuana††† |
11.5 (9.4–14.0) |
21.7 (19.2–24.5) |
30.7 (27.8–33.7) |
46.9 (41.4–52.5) |
| Ever used cocaine§§§ |
2.5 (1.8–3.6) |
4.4 (3.5–5.5) |
6.4 (5.2–7.8) |
19.2 (14.8–24.6) |
| Ever used heroin¶¶¶ |
0.9 (0.5–1.6) |
1.2 (0.8–1.8) |
2.1 (1.2–3.6) |
10.0 (6.8–14.4) |
| Ever used methamphetamines**** |
1.3 (0.8–2.0) |
2.3 (1.7–3.1) |
3.5 (2.6–4.7) |
11.9 (8.9–15.7) |
| Ever injected any illegal drug†††† |
0.8 (0.5–1.3) |
1.2 (0.7–2.1) |
1.9 (1.2–3.0) |
8.9 (6.3–12.6) |
| Ever took prescription drugs without a doctor’s prescription§§§§ |
10.7 (9.2–12.4) |
16.7 (15.0–18.6) |
21.7 (19.6–23.9) |
34.1 (29.0–39.7) |
|
Sexual risk behavior
| ||||
| Ever had sexual intercourse |
30.5 (26.1–35.3) |
40.7 (37.2–44.2) |
54.2 (50.9–57.4) |
62.1 (55.7–68.1) |
| Had sexual intercourse with four or more persons¶¶¶¶ |
6.3 (4.4–8.9) |
11.3 (9.8–13.1) |
16.6 (14.6–18.9) |
26.2 (19.8–33.7) |
| Currently sexually active***** |
23.0 (19.8–26.6) |
30.0 (27.3–32.9) |
38.0 (35.4–40.6) |
45.8 (40.2–51.5) |
| Did not use a condom during last sexual intercourse††††† |
38.6 (33.5–44.0) |
42.0 (38.5–45.6) |
46.3 (41.2–51.6) |
58.7 (48.7–68.0) |
| Did not use any method to prevent pregnancy during last sexual intercourse††††† |
8.9 (6.8–11.5) |
11.7 (9.1–15.0) |
16.4 (12.8–20.9) |
31.3 (23.3–40.7) |
|
Violence-related behavior
| ||||
| Experienced physical dating violence§§§§§ |
7.4 (5.9–9.3) |
9.2 (8.0–10.5) |
10.3 (8.9–12.0) |
18.6 (14.5–23.7) |
| Experienced sexual dating violence¶¶¶¶¶ |
9.5 (7.8–11.6) |
10.6 (9.3–12.0) |
9.6 (8.0–11.5) |
16.7 (12.1–22.5) |
| Were bullied on school property****** |
19.6 (17.5–21.9) |
19.7 (18.0–21.6) |
19.6 (17.2–22.3) |
31.1 (27.5–34.9) |
| Were electronically bullied†††††† |
14.7 (13.3–16.1) |
14.9 (13.2–16.8) |
16.8 (14.8–18.9) |
25.6 (21.8–30.0) |
| Did not go to school because of safety concerns§§§§§§ |
2.8 (1.9–4.1) |
5.2 (4.3–6.2) |
7.3 (5.9–9.1) |
15.3 (12.1–19.2) |
|
Suicide-related behavior
| ||||
| Seriously considered attempting suicide****** |
14.1 (12.5–15.9) |
15.7 (14.3–17.2) |
21.7 (19.4–24.2) |
36.0 (30.7–41.5) |
| Made a plan about how they would attempt suicide****** |
11.3 (9.4–13.5) |
13.8 (12.5–15.3) |
17.6 (15.3–20.1) |
27.6 (23.4–32.2) |
| Attempted suicide¶¶¶¶¶¶ | 5.6 (4.4–7.1) | 7.4 (6.5–8.4) | 11.7 (9.9–13.9) | 21.3 (17.4–25.8) |
Abbreviation: CI = confidence interval.
* During the 7 days before the survey.
† Includes green salad, potatoes (excluding French fries, fried potatoes, or potato chips), carrots, or other vegetables, during the 7 days before the survey.
§ Not including diet soda or diet pop, during the 7 days before the survey.
¶ Doing any kind of physical activity that increased their heart rate and made them breathe hard some of the time during the 7 days before the survey.
** Run by their school or community groups during the 12 months before the survey.
†† In an average week when they were in school.
§§ On an average school day.
¶¶ For something that was not school work on an average school day.
*** At least one drink of alcohol on at least 1 day during the 30 days before the survey.
††† One or more times during the 30 days before the survey.
§§§ Any form of cocaine, such as powder, crack, or freebase, one or more times during their life.
¶¶¶ Also called “smack,” “junk,” or “China white,” one or more times during their life.
**** Also called “speed,” “crystal,” “crank,” or “ice,” one or more times during their life.
†††† Used a needle to inject any illegal drug into their body one or more times during their life.
§§§§ Such as OxyContin, Percocet, Vicodin, codeine, Adderall, Ritalin, or Xanax, one or more times during their life.
¶¶¶¶ During their life.
***** Had sexual intercourse with at least one person during the 3 months before the survey.
††††† During last sexual intercourse among the 30.1% of students nationwide who were currently sexually active.
§§§§§ One or more times during the 12 months before the survey, being physically hurt on purpose (including being hit, slammed into something, or injured with an object or weapon on purpose) by someone they were dating or going out with among the 68.6% of students nationwide who dated or went out with someone during the 12 months before the survey. (Note: the prevalence of dating or going out with someone during the 12 months before the survey varies slightly for physical and sexual dating violence because of the differences in the number of usable responses to each violence question.)
¶¶¶¶¶ One or more times during the 12 months before the survey, being forced to do sexual things (including kissing, touching, or being physically forced to have sexual intercourse) they did not want to do by someone they were dating or going out with among the 69.1% of students nationwide who dated or went out with someone during the 12 months before the survey.
****** During the 12 months before the survey.
†††††† Including being bullied through e-mail, chat rooms, instant messaging, Websites, or texting during the 12 months before the survey.
§§§§§§ Did not go to school because they felt unsafe at school or on their way to or from school on at least 1 day during the 30 days before the survey.
¶¶¶¶¶¶ One or more times during the 12 months before the survey.