INTRODUCTION
The SARS-CoV-2 infection, which began in December 2019 has now become a
global pandemic of unpredictable consequences constituting a threat to
public health, as well as causing thousands of deaths daily throughout
the world.
Many aspects of COVID-19 remain unknown, given the changing nature of
the infection and the similarities and differences between the
characteristics of the different waves and this has necessitated
frequent re-appraisal of care planning. Consequently, in order to
provide crucial perspectives for care services and develop appropriate
health policies, numerous predictive models have been
developed2 which are regularly being updated.
Currently, the prospect is that COVID-19 will not disappear in the short
or medium term, despite the vaccination process implemented during
2021-2022. Moreover, constant study is required of the characteristics
of the disease and the factors related to an adverse evolution, in order
to enable rapid modification of treatments and reorganization of the
health system if necessary.
In this paper, we seek to identify factors related to hospitalization,
adverse evolution —defined as admission to an ICU or death— and
mortality related to the infection and evaluate their performance in the
latest variant of SARS-CoV-2, Omicron.