| | | |
 | Not Applicable | Have you ever had bronchitis? | 2006 |
| Not Applicable | Was it diagnosed by a doctor or other health professional? | 2006 |
| Not Applicable | At about what age did you first have bronchitis? | 2006 |
| Not Applicable | How many times have you had bronchitis? | 2006 |
| Not Applicable | Have you ever had pneumonia or bronchopneumonia? | 2006 |
| Not Applicable | At about what age did you first have pneumonia or bronchopneumonia? | 2006 |
| Not Applicable | How many times have you had pneumonia or bronchopneumonia? | 2006 |
| Not Applicable | Have you ever had chronic bronchitis? | 2006 |
| Not Applicable | Do you still have it? | 2006 |
| Not Applicable | In the past 12 months, have you received medical treatment, taken medications or used an inhaler for chronic bronchitis? | 2006 |
| Not Applicable | Have you ever had emphysema? | 2006 |
| Not Applicable | Have you ever had COPD (chronic obstructive pulmonary disease)? | 2006 |
| Not Applicable | Was it diagnosed by a doctor or other health professional? | 2006 |
| Not Applicable | Do you still have it? | 2006 |
| Not Applicable | In the past 12 months, have you received medical treatment, taken medications or used an inhaler for COPD? | 2006 |
| Not Applicable | Have you ever had pulmonary fibrosis, IPF, or pneumoconiosis? | 2006 |
| VA | Was there any diagnosis of Chronic Obstructive Pulmonary Disease (COPD)? | 2014 |
| RANDS | Have you ever been told by a doctor or other health professional that you had emphysema? | 2015 |
| RANDS | Have you ever been told by a doctor or other health professional that you had chronic obstructive pulmonary disease, also called COPD? | 2015 |
| RANDS | Have you ever been told by a doctor or other medical professional that you have Chronic Obstructive Pulmonary Disease, or COPD, emphysema, or chronic bronchitis? | 2015 |
| RANDS | Which condition were you told you had? | 2015 |
| RANDS | Thinking about the most recent time you had symptoms of Chronic Obstructive Pulmonary Disease or COPD, emphysema, or chronic bronchitis, how long did the symptoms last? | 2015 |
| RANDS | During the past 12 months have you had an episode of asthma, or an asthma attack? | 2015 |
| RANDS | Have you ever been told by a doctor or other health professional that you had chronic bronchitis? | 2015 |
| RANDS | Have you ever been told by a doctor or other health professional that you have Chronic Obstructive Pulmonary Disease, COPD, emphysema, or chronic bronchitis? | 2018 |