Paired t test comparisons of the effect of removal of CSF on polysomnographic variables
| Polysomnographia | Before CSF removal (n=15) | After CSF removal (n=15) | |||||
|---|---|---|---|---|---|---|---|
| Mean | 95% CI | Mean | 95% CI | ||||
| Total sleep time (min) | 331 | 278-384 | 370 | 330-411 | |||
| Stage 1 (%) | 34 | 27-41 | 32 | 23-40 | |||
| Stage 2 (%) | 45 | 39-52 | 45 | 37-52 | |||
| REM stage (%) | 10 | 5-14 | 12 | 9-15 | |||
| Delta stage (%) | 11 | 6-16 | 12 | 8-15 | |||
| Awakenings (n) | 30 | 24-35 | 31 | 23-38 | |||
| Wakenings after onset of sleep (min) | 116 | 130-202 | 142 | 96-187 | |||
| RDI | 18.1 | 11.0-25.1 | 26.72-150 | 18.9-34.5 | |||
↵2-150 p < 0.05 v investigation before removal of CSF.