The burden associated with headache is a major public health problem, the true magnitude
of which has not been fully acknowledged until now. Globally, the percentage of the adult …

… , and of comorbidity of physical and … health comorbidity between variables. We used binary
logistic regression to examine associations between physical and mental health comorbidities…

… and evaluate the associations of epidemiological, comorbidity factors with the severity and
… , older age and comorbidities owned strong epidemiological evidence of associations with …

… In this population-based study, we examined multimorbidity and comorbidity patterns … of
conditions and comorbidities for index conditions. We defined comorbidity as the accumulation …

… their original comorbidities; we therefore need to accurately evaluate all original comorbidities
of … The epidemiological characteristics of an outbreak of 2019 novel coronavirus diseases (…

… of epidemiologic … epidemiology (incidence, prevalence, and survival) associated with the
major rheumatic diseases. We then discuss the influence of comorbidity on the epidemiology of …

… with comorbidities at 4 years without IgE sensitisation had higher relative risks of comorbidity
… For children without comorbidity at age 4 years, 38% of the comorbidity at age 8 years was …

… When the comorbidity is causally related to or is a complication of the index disease, disease-…
will require patients with a mix of comorbid conditions to be included in randomised trials. …

… The term “comorbidity” can have three roles in epidemiologic studies, depending … Comorbidity
Index is frequently used in clinical epidemiology studies to quantify the level of comorbidity…

Background The objectives of this study were to identify risk factors for severe coronavirus
disease 2019 (COVID-19) and to lay the basis for risk stratification based on demographic …