Comstock 1962.
| Methods | Randomization by family unit. | |
| Participants | 7,333 Alaskan villagers in 28 villages and 2 boarding schools. Enrolled regardless of PPD status. |
|
| Interventions | Isoniazid 300 mg daily for 1 year. | |
| Outcomes | 1. Active tuberculosis | |
| Notes | — | |