Table 3.

Sensitivity and PPV of Z-PLUS as compared with the individual PSG technologists for Wake, Light Sleep, Deep Sleep, and REM

	Wake	Light Sleep	Deep Sleep	REM
Technologist 1
Sensitivity	0.88	0.81	0.71	0.69
PPV	0.81	0.83	0.71	0.69
Technologist 2
Sensitivity	0.89	0.81	0.66	0.68
PPV	0.76	0.81	0.85	0.67
Technologist 3
Sensitivity	0.84	0.83	0.73	0.70
PPV	0.85	0.82	0.76	0.71
Technologist 4
Sensitivity	0.91	0.79	0.36	0.73
PPV	0.73	0.68	0.96	0.70
Technologist 5
Sensitivity	0.91	0.79	0.69	0.71
PPV	0.76	0.85	0.67	0.71

Abbreviations: PPV, positive predictive value; PSG, polysomnography; REM, Rapid Eye Movement.