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Table 5 Parameter estimates for the three components truncated Poisson finite mixture model on adults (15+)

From: Frequent use of emergency departments and chronic conditions in ageing societies: a retrospective analysis based in Italy

Variable First latent class Second latent class Third latent class
Coef. Std. err. Sig. Coef. Std. err. Sig. Coef. Std. err. Sig.
Male 0.005 0.003   − 0.001 0.003   0.080 0.011 ***
Foreign − 0.137 0.006 *** 0.022 0.005 *** 0.035 0.015 *
Age − 0.002 0.000 *** − 0.003 0.000 *** − 0.002 0.000 ***
Mental disorders 0.736 0.005 *** 0.650 0.006 *** 0.758 0.015 ***
Diseases of the nervous system and sense organs 0.542 0.006 *** 0.357 0.009 *** 0.245 0.021 ***
Diseases of the circulatory system 0.616 0.005 *** 0.413 0.006 *** 0.295 0.016 ***
Diseases of the respiratory system 0.634 0.007 *** 0.468 0.010 *** 0.248 0.023 ***
Diseases of the digestive system 0.645 0.009 *** 0.475 0.012 *** 0.260 0.030 ***
Diseases of the genitourinary system 0.640 0.008 *** 0.435 0.010 *** 0.392 0.023 ***
Diseases of the musculoskeletal system 0.616 0.008 *** 0.429 0.011 *** 0.308 0.027 ***
Congenital anomalies 0.693 0.004 *** 0.495 0.005 *** 0.418 0.012 ***
Multiple chronicity 0.497 0.006 *** 0.343 0.007 *** 0.369 0.018 ***
_cons -0.166 0.006 *** 1.432 0.006 *** 2.446 0.017 ***
Number of observations 958,712
Correlation real accesses vs predicted 0.92
AIC 2,711,550
% of patients 84.4% 15.1% 0.5%
% accesses 69% 28% 3%
Average number of accesses 1.71 6.14 18.50
  1. Significance levels: *p value < 0.05; **p value < 0.01; ***p value < 0.001