Table 2

Sleep variables of patients with Tourette's syndrome (n=25) compared with healthy controls (n=4)

Tourette patients (n=25) Controls
p Value
TIB (min)519 (81)486 (53)NS
SPT (min)472 (87)464 (56)NS
TST (min)428 (93)446 (60)NS
SE (TST in %TIB)82 (10)92 (6)<0.001
Sleep latency (min)40 (49)17 (9)<0.05
REM latency (min)97 (62)94 (38)NS
Wake% (SPT)9.6 (5.6)3.9 (3.7)<0.001
St I% (SPT)11.9 (4.1)8.7 (2.4)<0.01
St II% (SPT)47.1 (9.1)49.4 (5.8)NS
SWS% (SPT)10.2 (7.0)14.7 (3.9)<0.05
REM% (SPT)20.8 (4.0)22.8 (4.8)NS
St I% (TST)13.3 (5.1)9.1 (2.9)<0.005
St II% (TST)51.9 (9.0)51.3 (5.8)NS.
SWS% (TST)11.2 (7.8)15.2 (3.9)<0.05
REM% (TST)23 (4.5)23.7 (4.9)NS
Awakenings/h SPT2.8 (1.6)1.5 (0.7)<0.001
Sleep stage changes/h SPT18.6 (5)15.8 (2.4)<0.05
  • Values are means (SD), t test (two tailed); TIB=time in bed; SPT=sleep period time; TST=total sleep time; SE=sleep efficiency =TST/TIB; SL=sleep latency; REM-latency=latency to REM sleep from sleep onset; W%, St I %, St II%, St SWS%, REM% (SPT)/(TST)=percentage of wake, stage I, stage II, slow wave sleep, REM sleep of SPT or TST respectively; awakenings/h SPT=number of awakenings/hour SPT; sleep stage changes/h SPT=sleep stage changes/hour SPT.