Multimorbidity patterns and survival outcomes in older adults with multiple myeloma: findings from SEER-Medicare.

We determined survival differences between patients with low severity multimorbidity, concurrent psychiatric/musculoskeletal disorders, and concurrent cardiometabolic/multisystem impairments.

Survival probabilities were compared between the pre- and post-novel drug era to account for the impact of novel therapies.

There were no differences in mortality risk between psychiatric/musculoskeletal and low severity multimorbidity patterns.

Survival probabilities were more similar between multimorbidity patterns in the post-novel drug era.