Table 1

Classification of DSPD cases


Number
Percent
Cumulative Percent

1 Absolutely Certain
72
35.1
35.1
2 Fairly Certain
69
33.7
68.8
3 Questionable
44
21.5
90.2
4 Unlikely
16
7.8
98.0
5 Very Doubtful
4
2.0
100.0
TOTAL
205
100.0


Kripke et al. Journal of Circadian Rhythms 2008 6:6   doi:10.1186/1740-3391-6-6