| Field ID | Description | Relationship |
| 30434 | Dozing off at work during non-standa ... | Current Field determines whether data is present for Field 30434 |
| 30435 | Dozing off while driving after at le ... | Current Field determines whether data is present for Field 30435 |
| 30433 | Sense of well-being while working no ... | Current Field determines whether data is present for Field 30433 |
| 30439 | Time typically fell asleep on a non- ... | Current Field determines whether data is present for Field 30439 |
| 30436 | Time typically fell asleep on a work ... | Current Field determines whether data is present for Field 30436 |
| 30441 | Time typically woke up on a non-work ... | Current Field determines whether data is present for Field 30441 |
| 30437 | Time typically woke up on a workday ... | Current Field determines whether data is present for Field 30437 |
| 30432 | Waking up early and unable to get ba ... | Current Field determines whether data is present for Field 30432 |
| 30430 | Worked a non-standard shift schedule ... | Field 30430 contains the same type of information as Current Field |