Table 1.
Demographic characteristics | Overall population of high school seniors % (SE) |
Past-year nonmedical users of prescription stimulants without co- ingestion % (SE) |
Past-year nonmedical users of prescription stimulants with co- ingestion % (SE) |
Non-co-ingestion versus co-ingestion prescription stimulant users p-value |
---|---|---|---|---|
Sex Male Female |
47.3 (0.6) 52.7 (0.6) |
30.0 (3.4) 70.0 (3.4) |
46.7 (2.7) 53.3 (2.7) |
F(1,694)=13.5, p < 0.001 |
Race White Black Other/Not specified/Missing |
61.8 (0.5) 10.1 (0.3) 28.1 (0.5) |
73.9 (3.2) 5.1 (1.6) 21.0 (3.0) |
71.1 (2.3) 0.8 (0.4) 28.0 (2.3) |
F(1.96,1557.91)=7.2, p < 0.001 |
Geographical region West North Central/Midwest South Northeast |
20.1 (0.4) 24.8 (0.5) 34.8 (0.5) 20.3 (0.4) |
17.4 (2.7) 19.3 (2.8) 42.6 (3.6) 20.8 (2.7) |
15.9 (1.9) 26.0 (2.2) 38.1 (2.5) 20.1 (1.9) |
NS |
Urbanicity Rural Suburban/Urban |
46.7 (0.6) 53.3 (0.6) |
47.0 (4.0) 53.0 (4.0) |
51.0 (2.9) 49.0 (2.9) |
NS |
Average grades C or worse B’s A’s |
18.4 (0.4) 46.8 (0.6) 34.8 (0.5) |
18.6 (2.8) 49.5 (3.8) 31.9 (3.5) |
27.7 (2.5) 50.6 (2.8) 21.7 (2.4) |
F(2,1332.44)=4.32, p < 0.05 |
College plans Probably/definitely won’t Probably/definitely will |
19.0 (0.5) 81.0 (0.5) |
19.3 (3.2) 80.7 (3.2) |
26.6 (2.6) 73.4 (2.6) |
NS |
Nonmedical use onset 6th or below 7th grade 8th grade 9th grade 10th grade 11th grade 12th grade |
-- -- -- -- -- -- -- |
0.0 (0.0) 2.9 (1.5) 7.6 (2.6) 18.8 (3.9) 17.9 (3.5) 27.8 (3.9) 25.1 (3.8) |
2.4 (0.9) 2.5 (0.9) 8.4 (1.7) 24.1 (2.7) 27.4 (2.8) 22.1 (2.4) 13.1 (2.0) |
F(5.91,66676.49)=2.64 p < 0.05 |
NS = non-significant p < 0.05, --not applicable