Results 91 to 100 of about 38,373 (217)

Gompertz curves with seasonality [PDF]

Technological Forecasting and Social Change, 1994
This paper considers an extension of the usual Gompertz curve by allowing the parameters to vary over the seasons. This means that, for example, saturation levels can be different over the year. An estimation and testing method is proposed and illustrated with an example.
openaire   +2 more sources

A Type 2 Diabetes Policy Model That Predicts Remaining Life Expectancy, Quality‐Adjusted Life Expectancy and Healthcare Costs for Use in Economic Evaluation, Incorporating Equity Concerns

Diabetes, Obesity and Metabolism, Volume 28, Issue 6, Page 4772-4783, June 2026.
ABSTRACT Aims To illustrate a T2DM policy model incorporating socio‐economic status. Materials and Methods Using the Scottish Diabetes Research Network (SDRN) national diabetes cohort, we identified individuals newly diagnosed with T2DM between 1 January 2004 and 31 December 2020 and followed from diagnosis until death or end of follow‐up.
Lili Wei, Houra Haghpanahan, Sarah H. Wild, Claudia Geue, Elaine Butterly, Peter McMeekin, Stuart McGurnaghan, Luke A. K. Blackbourn, Robert Lindsay, David McAllister, Jim Lewsey   +10 more
wiley   +1 more source

Social Organisation Predicts Lifespan in Mammals

Ecology and Evolution, Volume 16, Issue 5, May 2026.
Using Bayesian phylogenetic analyses of 1436 mammal species, we show that pair‐living and group‐living species have longer maximum lifespans than solitary species after accounting for body mass and phylogeny. Differences between pair‐ and group‐living species were small, and activity period showed weak associations.
Owen R. Jones, Kevin Healy, Julia A. Jones   +2 more
wiley   +1 more source

Gompertz-Weibull {Gompertz} Type I: A Four-Parameter Generalization of the Weibull Family

Journal of Statistical Theory and Practice
AbstractIn this paper, we provide a construction method that provides greater flexibility in modeling real-world phenomenon by generalizing univariate probability distributions. The Gompertz distribution is used to provide new classes of models through T-X{Y} construction, in a manner we will define as a “proper” generalization, illustrated by ...
Scott Smith, Brenda Diaz-Martinez
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A bivariate Gompertz–Makeham life distribution

Journal of Multivariate Analysis, 2015
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Marshall, Albert W., Olkin, Ingram
openaire   +1 more source

Diagnostic Accuracy of Cardiovascular Disease Prediction Models: A Systematic Review and Meta‐Analysis of Validation Studies

Health Science Reports, Volume 9, Issue 5, May 2026.
ABSTRACT Background and Aim Cardiovascular diseases (CVD) are widely accepted to be the most serious health care problem in the world. We performed a diagnostic test accuracy systematic review and meta‐analysis to establish the real‐world performance of established CVD risk prediction tools, providing high‐certainty evidence to optimize primary ...
Mohammad Aziz Rasouli, Farid Najafi, Alireza Ansari‐Moghaddam, Bijan Nouri, Farhad Moradpour, Ghobad Moradi, Yousef Moradi   +6 more
wiley   +1 more source

Anthropogenic disturbance and trophic interactions mediate population viability of American martens

The Journal of Wildlife Management, Volume 90, Issue 4, May 2026.
We present a simulation model of the probability of collapse to <10% of carrying capacity for American marten populations over a 50‐year time frame in relation to forest disturbance due to commercial harvesting and fur‐trapping levels. Probability of collapse differed between models that assumed no effect of logging (solid line), martens living in a ...
John M. Fryxell, Cheryl A. Johnson, Philip A. Wiebe, James A. Baker, Ian D. Thompson   +4 more
wiley   +1 more source

Integration of Time‐Varying Pharmacometric Modeling With Cox Regression for Time‐to‐Event Analysis in NONMEM

CPT: Pharmacometrics &Systems Pharmacology, Volume 15, Issue 5, May 2026.
ABSTRACT Although time‐varying Cox regression modeling approaches have been developed, exposure–response analyses for time‐to‐event (TTE) endpoints often rely on static exposure covariates and may overlook the real‐world dosing variability and drug concentration fluctuations over time. To better characterize pharmacokinetic (PK) or pharmacodynamic (PD)
Chih‐Wei Lin, Po‐Wei Chen, Sameer Doshi, Sandeep Dutta   +3 more
wiley   +1 more source

Valuation and hedging of the ruin-contingent life annuity (RCLA) [PDF]

, 2012
This paper analyzes a novel type of mortality contingent-claim called a ruin-contingent life annuity (RCLA). This product fuses together a path-dependent equity put option with a "personal longevity" call option. The annuitant's (i.e.
Huang, Huaxiong, Milevsky, Moshe A., Salisbury, Thomas S.   +2 more
core   +1 more source

Simultaneous detection of gradual and abrupt structural changes in Bayesian longitudinal modelling using entropy and model fit measures

British Journal of Mathematical and Statistical Psychology, Volume 79, Issue 2, Page 294-324, May 2026.
Abstract Although individuals may exhibit both gradual and abrupt changes in their dynamic properties as shaped by both slowly accumulating influences and acute events, existing statistical frameworks offer limited capacity for the simultaneous detection and representation of these distinct change patterns.
Yanling Li, Xiaoyue Xiong, Zita Oravecz, Sy‐Miin Chow   +3 more
wiley   +1 more source