Background: Nocturia results from a mismatch between bladder capacity and nocturnal urine production (NUP), which is determined with a frequency volume charts (FVC).
Aim: This is the first study that aimed to describe variations in nocturia severity and its associated factors by evaluating FVCs per single 24 h-period.
Methods: This was a post-hoc analysis of patients who completed a 72 h-FVC in prospective, observational studies.