1. Chance of dozing while... sleeping and reading:

2. Chance of dozing while... watching TV:

3. Chance of dozing while... sitting inactive in a public place (e.g., theater or meeting):

4. Chance of dozing while... a passenger in a car for an hour without a break:

5. Chance of dozing while... lying down to rest in the afternoon when circumstances permit:

6. Chance of dozing while... sitting and talking to someone:

7. Chance of dozing while... sitting quietly after lunch without alcohol:

8. Chance of dozing while... in a car, when stopped for a few minutes in traffic: