Does multimorbidity still remain a matter of the elderly: Lithuanian national data analysis.

INTRODUCTION: Multimorbidity - the coexistence of ≥2 chronic conditions in same individual is usually associated with older age. There is an increase in its prevalence at a much younger age, however with very limited research specifying that.

OBJECTIVE: To identify age breaking points for the occurrence of multimorbidity.

METHODS: The study included patients, who used any healthcare services between the 01/01/2012 and 30/06/2014. Patients were divided into two groups - with single chronic condition and with multimorbidity. Age-specific proportion of multimorbidity, rate of primary and outpatient visits, number of hospitalizations and prescribed reimbursed medications between these groups were analyzed.

RESULTS: The study included 452578 patients, 94.63% of them had more than one chronic condition. The risk increase with every consecutive year for developing multimorbidity was between the age of 28 and 39 years. The age breaking point for the rapid increase in hospitalizations was about 29 years in multimorbidity group. The proportion of patients with multimorbidity using expensive medications starts to increase at the age of 41.

CONCLUSIONS: The risk of acquiring an additional chronic condition rises exponentially from the age of 29 years and platos between the age of 51 and 57. Patients with multimorbidity require increasing amounts of primary healthcare resources, where patients with single chronic condition require decreasing primary care usage, possibly attributed to successful patient empowerment.