title: Reliability of the Watch-PAT 200 in detecting sleep apnea in highway bus drivers.
abstract: OBJECTIVE
  To predict the validity of Watch-PAT (WP) device for sleep disordered breathing (SDB) among highway bus drivers.
  
  
  METHODS
  A total number of 90 highway bus drivers have undergone polysomnography (PSG) and Watch-PAT test simultaneously. Routine blood tests and the routine ear-nose-throat (ENT) exams have been done as well.
  
  
  RESULTS
  The sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV) were 89.1%, 76.9%, 82% and 85.7% for RDI > 15, respectively. WRDI, WODI, W < 90% duration and Wmean SaO2 results were well correlated with the PSG results. In the sensitivity and specificity analysis, when diagnosis of sleep apnea was defined for different cut-off values of RDI of 5, 10 and 15, AUC (95%CI) were found as 0.84 (0.74-0.93), 0.87 (95%CI: 0.79-0.94) and 0.91 (95%CI: 0.85-0.97), respectively. There were no statistically significant differences between Stage1+2/Wlight and Stage REM/WREM. The percentage of Stage 3 sleep had difference significant statistically from the percentage of Wdeep. Total sleep times in PSG and WP showed no statistically important difference. Total NREM duration and total WNREM duration had no difference either.
  
  
  CONCLUSIONS
  Watch-PAT device is helpful in detecting SDB with RDI > 15 in highway bus drivers, especially in drivers older than 45 years, but has limited value in drivers younger than 45 years old who have less risk for OSA. Therefore, WP can be used in the former group when PSG is not easily available.
authors.affiliation: Department of Chest Diseases and Sleep Center, Ankara Diskapi Yildirim Beyazit Educational & Research Hospital, Ankara, Turkey. melikebanuy@yahoo.com.tr
authors.forename: Melike
authors.initials: M
authors.lastname: Yuceege
authors.forename: Hikmet
authors.initials: H
authors.lastname: Firat
authors.forename: Ahmet
authors.initials: A
authors.lastname: Demir
authors.forename: Sadik
authors.initials: S
authors.lastname: Ardic
mesh_terms: D000328:Adult; D001334:Automobile Driving / Q000706:statistics & numerical data*; D006801:Humans; D008297:Male; D008875:Middle Aged; D018670:Monitoring, Ambulatory / Q000295:instrumentation* / Q000379:methods / Q000592:standards*; D018986:Motor Vehicles; D017286:Polysomnography / Q000295:instrumentation* / Q000379:methods / Q000592:standards*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D020181:Sleep Apnea, Obstructive / Q000175:diagnosis*
keywords: Ambulatory monitoring; highway driver; polysomnography; sleep disordered breathing