Construct · 1 fields · 2 citations
One name. One construct. A landmark on the map.
● anchor · the time-age coordinate grid of demography Nearest construct by meaning·not indexedA single standalone construct; nearby constructs are located against it in the Collider. Tap a field for its definition, unit, and measures.
The Lexis diagram is the coordinate plane formal demography uses to organise events in a population, with calendar time on one axis and age on the other, so each individual's life traces a 45-degree line and events, cohorts, and age–period groups appear as points, bands, and parallelograms. It makes explicit how age, period, and birth cohort are linked and is the standard device for defining rates and exposure. Keiding's 1990 Statistical inference in the Lexis diagram connects it to modern event-history and counting-process methods, and Vandeschrick's 2001 The Lexis diagram, a misnomer traces its contested nineteenth-century origins. The referent is a representational and bookkeeping construct for population events, not a model of behaviour.[1][2]
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