Table 4 Proportion of 19- and 20-year-olds licensed and proportion with learner permit before age 19 among those not licensed before age 18, United States, 2012
| Licensed before 19 thbirthday | Permit before 19 thbirthday | |
|---|---|---|
| % (95% CI) | ||
| All (n = 332) | 32 (24–40) | 60 (52–68) |
| Permit before 18 th birthday | ||
| Yes (n = 125) | 59 (46–72) | 100 (–) |
| No (n = 207) | 18 (10–26) | 38 (28–48) |