| Description: | Do you have any of the following: Chronic Obstructive Pulmonary Disease |
| Category: | Specialist questionnaire data ⏵ Covid questionnaires ⏵ General health |
| Participants | 1,650 | Value Type | Categorical (single) | Sexed | Both sexes | Debut | Sep 2024 | |||
| Item count | 1,774 | Item Type | Data | Instances | Defined (3) | Version | N/A | |||
| Stability | Complete | Strata | Primary | Array | No | Cost Tier | dX oX sX |
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Data has not been summarised because combining instances would be misleading.
Instance 30 : 2020 - Second covid questionnaire at age 74 years.
237 participants, 237 items
Instance 31 : 2021 - Third covid questionnaire at age 75 years.
1,438 participants, 1,438 items
National Survey of Health and Development 1946 Cohort