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	Coale-McNeil Marriage Model	Brass Relational Logit Model
Field	Demography	Demography
Family	Regression model	Regression model
Year of origin	1972	1971
Originator	Ansley J. Coale & Donald R. McNeil	William Brass
Type	Parametric model of the age schedule of first marriage	Two-parameter relational mortality model
Seminal source	Coale, A. J., & McNeil, D. R. (1972). The distribution by age of the frequency of first marriage in a female cohort. Journal of the American Statistical Association, 67(340), 743–749.	Brass, W. (1971). On the scale of mortality. In W. Brass (Ed.), Biological Aspects of Demography. Taylor & Francis / Barnes & Noble. ISBN: 9780850660425
Aliases	Coale-McNeil Nuptiality Model, Coale-McNeil Model Schedule of First Marriage, Standard Nuptiality Schedule	Brass Logit System, Brass Logit Life-Table Model, Two-Parameter Logit Mortality Model, Brass İlişkisel Logit Modeli
Related	4	4
Summary	The Coale-McNeil model is a parametric description of how first marriages are distributed by age. Ansley Coale and Donald McNeil showed in 1972 that the age pattern of first marriage in widely different populations has a common shape, captured by a single standard curve that can be shifted and stretched. Three parameters — an origin age at which marriage starts, a scale that controls how spread out the process is, and the ultimate proportion who ever marry — reproduce almost any observed first-marriage schedule, giving demographers a compact and comparable summary of nuptiality.	The Brass relational logit model is a two-parameter system for representing and smoothing a life table by relating it to a chosen standard. Introduced by William Brass in 1971, it transforms the survivorship function with a logit and posits that the logits of any two life tables are linearly related, so that an entire age pattern of mortality can be summarized by just two parameters — a level parameter and a parameter governing the balance of childhood versus adult mortality.