Birth date of child 4 derivation
Indicates whether the birthdate of the fourth child was directly sourced or inferred from other household attributes. Known or imputed for 3.7 million individuals — 1.5% of Faraday's identity graph.
At a glance
- Coverage today
- 1.5%
- Typical coverage
- 1.9%
- Individuals with a value
- 3.7M
- Share in largest category
- 100.0%
- Most values come
- from the person
- Latest collection
- May 1, 2026
How the categories split
n = 3,741,584Share of individuals in each category. 2 categories, with 100.0% in the largest.
Category shares over time
Derived using data specific to this household100.0% (largest)The 2 largest categories, each followed across 12 collections. Estimated from a 1% sample of individuals.
Coverage
Latest collection: 229,689,060 individualsCoverage by state
Percentage of individuals in each state with a value.
Coverage over time
1.5% todayShare of individuals holding a value at each monthly snapshot. A value carries forward for one year.
How we arrive at a value
Whether a value was observed on the person themselves, carried from their address, or estimated from the people around them.
- On the person — 100%
- A named person, from a record about that person.
- From address — 0%
- Not used for this attribute — no value is inherited this way.
- From geography — 0%
- Not used for this attribute — no value is inherited this way.
Coverage, in context
Where 1.5% sits on the catalog’s own coverage range.
Higher coverage than 5% of individual-level attributes in the catalog
Freshness
How recently this was collected, and how often a new collection arrives. Each bar is the number of individuals in that collection. Gaps are real — collection is periodic, not continuous.
Change between collections
The share of individuals whose category changed.
of individuals changed value between the two most recent collections. Nothing changed. The catalog median is 13.5%.
Contribution ledger
13 ingestions
1 authority contributed since Jul 2023.
| Observed | Ingested | Count | ID |
|---|---|---|---|
| 2026-05-01 | 2026-09-10 | 266,506,942 | c5492806… |
| 2026-03-01 | 2026-07-01 | 264,096,977 | 1181277b… |
| 2026-02-01 | 2026-07-02 | 264,777,400 | af53c569… |
| 2025-12-01 | 2026-08-11 | 268,508,091 | 84d6a1c5… |
| 2025-11-01 | 2026-08-11 | 268,299,874 | a071c538… |
Technical details
- API name
- birth_date_of_child_4_derivation
- Category
- fig/demography
- Type · unit
- Text
- Statistical type
- nominal
- Allowed values
- null
- Derivations
- null
- Directionality
- null
- Deprecation
- false
In a payload
{
"attributes": {
"birth_date_of_child_4_derivation": "Derived using data specific to this household"
}
}