Table 2.
Prescription Stimulant Users | Stimulants Only n=117 M(SE) |
Stimulants and Analgesics n=65 M(SE) |
---|---|---|
Age of onset (stimulants) | 17.3 (.2)a | 16.9 (.2)a |
Lifetime frequency of use | 16.8 (3.7) | 22.6 (5.1) |
Ever inhaled (%) | 4.3a | 13.9a |
Number of other drugs ever used | 1.5 (.1)abc | 3.4 (.1)ad |
Prescription Analgesic Users | Analgesics Only n=85 M(SE) |
Stimulants and Analgesics n=65 M(SE) |
Age of onset (analgesics) | 17.1 (.2) | 17.2 (.2) |
Lifetime frequency of use | 8.9 (5.7) | 14.3 (6.8) |
Ever inhaled (%) | 8.2 | 15.4 |
Number of other drugs ever used | 2.2 (.1)bef | 3.4 (.1)e |
Nonusers | ||
Number of other drugs ever used | 0.8 (.1)cdf |
abc Groups that share the same superscript are significantly different (p<.05), as determined in simple pairwise comparisons of least squares means. All comparisons control for the effects of race, sex, and mother's education. For the number of other drugs used, the same result is reported twice for the stimulantsand-analgesics group, to assist the reader in interpreting comparisons; however, all comparisons were performed in one regression model.