"Short sleep and fragmented sleep are critical yet unappreciated risk factors for CKD progression," said among the researchers, Ana Ricardo, in the University of Illinois at Chicago in the US.
"Our research adds to the accumulating knowledge regarding the importance of sleep on kidney function, and underscores the need to design and analyze clinical interventions to improve sleep habits in people with CKD," she added.
Although there's increasing evidence that sleep disorders are common in people with CKD, its connection with CKD progression is unknown.
To investigate, her colleagues and Ricardo analyzed the sleep patterns of 432 adults with chronic kidney disease. Participants wore a wrist monitor to quantify quality and sleep duration, and their health was followed for a median of five years.
Participants slept an average of 6.5 hours/night, and during followup, 70 people developed kidney failure and 48 individuals perished.
The researchers calculated that each additional hour of nighttime slumber was linked lower risk of developing kidney failure.
There was also a substantial association between kidney failure hazard and sleep quality - each one per cent increase in sleep fragmentation was linked with a four per cent increase in the risk of developing kidney failure.