Background To the best of our knowledge, this is the first study to examine the relationship of
rest-activity rhythm with survival in older adults with lung cancer and to consider variations in
rest-activity rhythm over time. Objective The aim of this study was to explore the relationship
between rest-activity rhythm variations and survival in 33 older adults with lung cancer by
considering rest-activity rhythm as a time-dependent covariate over time. Methods In this
prospective study with 5 repeated measurements, patients' rest-activity rhythm over 3 days …