| LP130858-6 | Have you ever had discharge of blood or pus, or smelly discharge, not wax, from either ear | COMPONENT | 1 |
| LP130859-4 | Have you ever had an ear operation | COMPONENT | 1 |
| LP130860-2 | Have you ever suffered from attacks of dizziness in which things seem to spin around you | COMPONENT | 1 |
| LP130861-0 | Do you feel unsteady when walking in the dark | COMPONENT | 1 |
| LP130862-8 | Country of origin | COMPONENT | 2 |
| LP130863-6 | Region of origin | COMPONENT | 1 |
| LP130864-4 | Does your parent have or had hearing problems | COMPONENT | 1 |
| LP130865-1 | Do you have any brothers or sisters with normal hearing | COMPONENT | 1 |
| LP130866-9 | How many of your brothers or sisters have normal hearing | COMPONENT | 1 |
| LP130867-7 | Do you have any children with normal hearing | COMPONENT | 1 |
| LP130868-5 | How many of your children have normal hearing | COMPONENT | 1 |
| LP130869-3 | Do you have uncles, aunts, cousins, nephews, or nieces with hearing difficulties | COMPONENT | 1 |
| LP130870-1 | Do you know if any of your relatives have already participated in this investigation | COMPONENT | 1 |
| LP130871-9 | Name of your relative that have already participated in this investigation | COMPONENT | 1 |
| LP130872-7 | Do you suffer from migraine | COMPONENT | 1 |
| LP130873-5 | How often do you generally have attacks | COMPONENT | 1 |
| LP130874-3 | Have you ever suffered a hearing loss from meningitis or encephalitis | COMPONENT | 1 |
| LP130875-0 | Have you ever had a whiplash injury | COMPONENT | 1 |
| LP130876-8 | Have you ever been knocked unconscious, in a traffic accident, contact sport, a fight or after a fall | COMPONENT | 1 |
| LP130877-6 | Have you ever had heart surgery | COMPONENT | 1 |
| LP130878-4 | Have you ever had coronary artery catheterization | COMPONENT | 1 |
| LP130879-2 | Type of intervention, stent, balloon dilatation | COMPONENT | 1 |
| LP130880-0 | Have you ever had an operation on your carotid artery | COMPONENT | 1 |
| LP130881-8 | Do you suffer from intermittent claudication | COMPONENT | 1 |
| LP130882-6 | Do you have other problems with your heart or circulation | COMPONENT | 1 |
| LP130883-4 | Problems with your heart or circulation | COMPONENT | 1 |
| LP130884-2 | Do you suffer from diabetes | COMPONENT | 1 |
| LP130885-9 | Do you need insulin | COMPONENT | 1 |
| LP130886-7 | Disease history | COMPONENT | 1 |
| LP130887-5 | Disease description | COMPONENT | 1 |
| LP130888-3 | Autoimmune diseases | COMPONENT | 1 |
| LP130889-1 | Do you have other serious health problems that are not covered by the previous questions | COMPONENT | 1 |
| LP130890-9 | Serious health problems | COMPONENT | 1 |
| LP130891-7 | Have you ever been treated for a serious infection with an antibiotic, other than penicillin, which was administered by injection or drip for a week or more | COMPONENT | 1 |
| LP130892-5 | Infections for which you received these antibiotics | COMPONENT | 1 |
| LP130893-3 | Have you had cancer or leukemia | COMPONENT | 1 |
| LP130895-8 | Have you been treated with chemotherapy or other medication for this condition | COMPONENT | 1 |
| LP130896-6 | Have you ever received radiotherapy to your head or neck for a tumor | COMPONENT | 1 |
| LP130898-2 | On average how often do you take painkillers | COMPONENT | 1 |
| LP130899-0 | Do you take aspirin on a daily basis for your heart or to dilute your blood | COMPONENT | 1 |
| LP130900-6 | How long have you been taking aspirin | COMPONENT | 1 |
| LP130901-4 | Medical reason why you had or have to take this medication | COMPONENT | 1 |
| LP130902-2 | Treatment duration | COMPONENT | 1 |
| LP130903-0 | Have you ever fired a gun | COMPONENT | 1 |
| LP130904-8 | Weapon type | COMPONENT | 1 |
| LP130905-5 | Shots fired | COMPONENT | 1 |
| LP130906-3 | Did you use ear protection | COMPONENT | 1 |
| LP130907-1 | Type of ear protection | COMPONENT | 1 |
| LP130908-9 | During your leisure time, have you been regularly, more than once a W, exposed to loud sound or noise, so that you have to shout to make yourself heard by someone who was more than 1 meter away from you | COMPONENT | 1 |
| LP130909-7 | What kind of loud sound | COMPONENT | 1 |