Healthcare service use for children with chronic complex diseases: A longitudinal six-year follow-up study.

Purpose: The objective was analysed the patterns use of healthcare services of this population and the influence of their clinical and sociodemographic characteristics.

Design And Methods: A six-year longitudinal follow-up study was performed to evaluate the annual healthcare resources use and clinical data among children with complex chronic diseases in Spain between 2015 and 2021. The sample trends in healthcare usage and the associated factors were analysed using ANCOVA and multivariable linear regression models.

Results: Patients had high attendance during the follow-up period, with >15 episodes year. This trend decreased over time, especially in children with oncological diseases compared with other diseases (F (16.75; 825.4) = 32.457; p < 0.001). A multivariable model showed that children with a greater number of comorbidities (β = 0.17), shorter survival time (β = -0.23), who had contact with the palliative care unit (β = 0.16), and whose mothers had a higher professional occupation (β = 0.14), had a greater use of the healthcare system.

Conclusions: Children with a higher number of comorbidities and the use of medical devices made a greater frequentation of health services, showing a trend of decreasing use over time. Socioeconomic factors such as mothers' occupational status determine healthcare frequentation. These results suggest the existence of persistent gaps in care coordination sustained over time.

Practical Implications: Systematized and coordinated models of care for this population should consider the presence of inequalities in health care use.