| Description: | Do you suffer from asthma or hayfever |
| Category: | Questionnaire data ⏵ Health and medical history ⏵ Medical conditions ⏵ Respiratory conditions |
| Participants | 2,451 | Value Type | Categorical (single) | Sexed | Both sexes | Debut | Jan 2026 | |||
| Item count | 4,816 | Item Type | Data | Instances | Defined (9) | 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 28 : 2015 - Survey carried out at age 69 years.
1,901 participants, 1,901 items
Instance 34 : 2023 - Home visit at 77 years.
776 participants, 776 items
National Survey of Health and Development 1946 Cohort