Relationship between incidence and prevalence in psychotic disorders: An incidence-prevalence-mortality model

International Journal of Methods in Psychiatric Research
Baptiste PignonAndrei Szöke

Abstract

Incidence-prevalence-mortality (IPM) models have been developped to estimate incidence or prevalence when one of these two measures is unavailable. We aimed to test the consistency of an IPM model of psychotic disorders on a recent incidence-prevalence couple dataset and to identify potential causes of inconsistency by applying the model to (a) the whole population, (b) female and male subgroups, (c) migrant subgroups, and (d) psychotic disorders with age at onset (AAO) between 18 and 24 (18-24 AAO). We modelled prevalence (MP) using incidence data and the expected mortality and remission values. We then compared the MP to the observed prevalence (OP). In the whole population, the model significantly underestimated the prevalence (MP = 3.30, 95% CI [2.97, 3.66]; OP = 4.98, 95% CI [4.58, 5.41]). The results were similar for the two genders. In the migrants group, results were in the opposite direction, the model significantly overestimating the prevalence. Finally, in the 18-24 AAO subgroup, the model performed well, with OP and MP not significantly different. These results suggest that standard IPM models do not perform well for psychotic disorders and more complex models taking into account the heterogeneity of the sample (in ...Continue Reading

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Citations

Jul 28, 2018·European Journal of Clinical Nutrition·Vanessa Garcia-LarsenIoannis Bakolis
Jan 10, 2019·International Journal of Methods in Psychiatric Research·Pim CuijpersRonald C Kessler
Aug 14, 2019·The Journal of International Medical Research·Yanyu JinWentao Ding
Sep 11, 2019·Expert Review of Neurotherapeutics·Antoine PelissoloLauriane Delhay
Jan 30, 2020·Circulation·Salim S ViraniUNKNOWN American Heart Association Council on Epidemiology and Prevention Statistics Committee and Stroke Statistics Subcommittee
Apr 26, 2021·Schizophrenia Research·Baptiste PignonBrian O'Donoghue

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