| hh001a | ^FLLastDateHealthHistory, have you experienced any of the following cold, flu and allergy symptoms that were noticeable or bothersome? Select all that apply. | cold symptoms |
| hh001a_date | Approximately when did your symptom(s) first begin? If you selected more than one symptom, enter the date of the one that started first. | when symptom began |
| hh001a_order | | order cold symptoms |
| hh001b | ^FLLastDateHealthHistory, have you experienced any of the following stomach or digestive issues that were noticeable or bothersome? Select all that apply. | stomach or digestive issues |
| hh001b_order | | order stomach or digestive issues |
| hh001d | Did you have other noticeable or bothersome symptoms in the last 30 days that we did not ask about yet? | other symptoms |
| hh001f | ^FLLastDateHealthHistory, have you experienced any of the following pain, neurological, or heart-related symptoms that were noticeable or bothersome? Select all that apply. | pain symptoms |
| hh001f_order | | order pain symptoms |
| hh003 | Did you receive a diagnosis from a doctor's office or positive result on an at-home test for any of the following conditions? Select all that apply. | receive diagnosis from doctor office or positive result on an at-home test |
| hh004 | Did you receive a positive test for a specific type of influenza?
| receive positive test for specific type of influenza |
| hh_begintime | | begintime health history questions |
| hh_endtime | | endtime health history questions |
| hh_order | | order of hh series |
| hh_reward | | health history reward |
| hh_time | | time spent health history questions |