RESULTS	In univariate analysis , sleep quality score decreased significantly in a linear fashion as appetite rating decreased from very good to very poor on both dialysis days ( 63.6 21.8 to 43.6 22.9 , P < .0001 ) and nondialysis days ( 63.2 21.6 to 40.7 25.7 , P < .0001 ) , with higher scores reflecting better sleep quality .\