Table 2.

Comparison of actigraphic and reported sleep measures of children with nocturnal enuresis and the control subjects

Actigraphic Measures	Children with NE	Control Children	F (Z)
Nighttime awakenings, no.	3.2 ± 1.5	2.4 ± 1.3	7.1a
Longest sleep period, min	154.3 ± 53.8	186.4 ± 70.0	4.7a
Motionless sleep, %	58.6 ± 10.0	64.3 ± 9.3	6.6a
True sleep time, min	502.3 ± 51.3	516.2 ± 43.0	n.s
Sleep Diary Measures
Nighttime awakenings, no.	1.0 ± 0.6	0.5 ± 0.5	19.9c
Sleep latencyd	2.0 ± 0.6	1.5 ± 0.9	2.5b
Morning sleepinesse	1.5 ± 0.4	1.3 ± 0.5	1.8a
Evening sleepinesse	2.1 ± 0.4	1.5 ± 0.6	3.9c

Data are displayed as mean ± SD. F value is based on analysis of covariance for all measures expect for the measures marked by ^a and ^b, which were analyzed using nonparametric Wilcoxon rank-sum test (Z). NE refers to nocturnal enuresis.

^aP < 0.05;

^bP < 0.01;

^cP < 0.0001

^d0 refers to < 5 min; 1, 5-14 min; 2, 15-30 min; 3, > 30 min.

^e0 refers to very alert; 1, somewhat sleepy; 2, very sleepy.