Table 6. . Personal use of substances prior to DNA collection for third generation participants (n = 441).
| Any use | No use | Percent without exposure | Median lifetime use for users | |
|---|---|---|---|---|
| Alcohol† |
139 |
288 |
65.3 |
449.1¶ |
| Cigarettes‡ |
65 |
354 |
80.3 |
365# |
| Marihuana† |
60 |
367 |
83.2 |
106.4†† |
| Amphetamine§ |
8 |
422 |
95.7 |
6.5†† |
| Cocaine§ |
6 |
424 |
96.1 |
33.7†† |
| Opioids§ | 7 | 423 | 95.9 | 63.7†† |
†Lifetime data not available for 14 participants who came into the study as young adults.
‡Lifetime data not available for 12 participants.
§Lifetime data not available for 11 participants.
¶Number of drinks. A drink is one 6 oz glass of wine, a mixed drink with 1.5 ounces of hard liquor (e.g., gin, bourbon); or one 12 oz beer.
#Number of packs (20 cigarettes to pack).
††Number of separate occasions when drug was used.