| Description: | Do you usually bring up any phlegm during the day or at night in winter? - at age 53 years |
| Category: | Questionnaire data ⏵ Health and medical history ⏵ Respiratory problems |
| Participants | 2,986 | Value Type | Categorical (single) | Sexed | Both sexes | Debut | Jan 2026 | |||
| Item count | 2,986 | Item Type | Data | Instances | Defined (1) | Version | N/A | |||
| Stability | Complete | Strata | Primary | Array | No | Cost Tier | dX oX sX |
