| Description: | Month of birth |
| Category: | Population characteristics ⏵ Baseline characteristics |
| Socio-demographics + Primary demographics |
| Participants | 501,938 | Value Type | Categorical (single) | Sexed | Both sexes | Debut | Jan 2012 | |||
| Item count | 501,938 | Item Type | Data | Instances | Singular | Version | Aug 2025 | |||
| Stability | Complete | Strata | Primary | Array | No | Cost Tier | o1 s1 |
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Acquired from central registry, updated by participant.
| Field ID | Description | Relationship |
|---|---|---|
| 33 | Date of birth | Current Field is the month part of Field 33 |
| 34 | Year of birth | Current Field is the calendar month within the year Field 34 |
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