| Description: | Oral contraceptive (age start) [baseline] |
| Category: | Recruitment questionnaire |
| Participants | 772,379 | Value Type | Integer, years | Sexed | Females only | Debut | Dec 2022 | |||
| Item count | 772,379 | Item Type | Data | Instances | Singular | Version | Dec 2022 | |||
| Stability | Updateable | Strata | Primary | Array | No | Cost Tier | dX oX sX |
