| Description: | Statements about feelings and thoughts. Option best describes your experience over the last 2 weeks - I've been thinking clearly |
| Category: | Questionnaire data ⏵ Mental health ⏵ Wellbeing and mastery |
| Participants | 3,803 | Value Type | Categorical (single) | Sexed | Both sexes | Debut | Jan 2026 | |||
| Item count | 7,947 | Item Type | Data | Instances | Defined (10) | 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 27 : 2014 - Survey carried out at age 68 years.
2,395 participants, 2,385 items
Instance 32 : 2022 - Survey carried out at age 76 years.
1,929 participants, 1,923 items
Instance 35 : 2025 - Postal questionnaire
1,675 participants, 1,675 items
National Survey of Health and Development 1946 Cohort