Table 2.
Timing of Assessments and Study Group Ns
| Assessment by Month | ||||
|---|---|---|---|---|
| Screen | Month 1 | Month 4 | Month 8 | Month 12 |
| NPSG | NPSG | Self Admin | NPSG | Self Admin |
| MSLT | MSLT | MSLT | ||
| Urinary NE | Urinary NE | |||
| Self Admin | ||||
| Study Ns | ||||
| Whole Grp | Self Admin Grp | |||
| Hi MSLT | 42 | 27 | ||
| Lo MSLT | 27 | 13 | ||
| Inter MSLT1 | 26 | 14 | ||
| TOTAL | 95 | 54 | ||
1
Inter MSLT not used in the study comparisons
NPSG = nocturnal polysomonography; MSLT = Multiple Sleep Latency Test; Urinary NE = urinary collection (07–1500 hr) for norepinephrine levels; Self Admin = one week hypnotic self administration assessment