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Table 6 Parameter estimates for the three components truncated Poisson finite mixture model on paediatric patients (0–14)

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 0.101 0.009 *** 0.040 0.007 *** 0.045 0.021 *
Foreign − 0.022 0.001 *** − 0.022 0.001 *** − 0.024 0.002 ***
Age − 0.113 0.015 *** 0.068 0.010 *** 0.059 0.029 *
Mental disorders 0.999 0.026 *** 0.575 0.027 *** 0.522 0.062 ***
Diseases of the nervous system and sense organs 0.733 0.029 *** 0.443 0.030 *** 0.405 0.061 ***
Diseases of the circulatory system 0.784 0.042 *** 0.406 0.046 *** 0.341 0.118 **
Diseases of the respiratory system 1.074 0.020 *** 0.645 0.022 *** 0.535 0.066 ***
Diseases of the digestive system 0.781 0.047 *** 0.381 0.057 *** 0.217 0.115  
Diseases of the genitourinary system 0.863 0.025 *** 0.441 0.029 *** 0.389 0.066 ***
Diseases of the musculoskeletal system 0.864 0.030 *** 0.440 0.036 *** 0.306 0.094 **
Congenital anomalies 0.809 0.015 *** 0.455 0.014 *** 0.507 0.038 ***
Multiple chronicity 0.044 0.031   0.203 0.032 *** 0.116 0.062  
_cons − 0.110 0.011 *** 1.4788 0.008 *** 2.466 0.022 ***
Number of observations 173,351
Correlation real accesses vs predicted 0.95
AIC 513,881
% of patients 78.8% 20.4% 0.8%
% accesses 61% 36% 4%
Average number of accesses 1.58 5.41 13.92
  1. Significance levels: * p value < 0.05; **p value < 0.01; ***p value < 0.001