Sleep study classification and parameters assessed
| Type of study | Parameters assessed | |
| Type 1 | In-laboratory polysomnography | EEG, EOG, EMG, airflow, respiratory effort, oximetry, snoring, ECG |
| Type 2 | Non-laboratory polysomnography | EEG, EOG, EMG, airflow, respiratory effort, oximetry, snoring, ECG |
| Type 3 | Cardiopulmonary study | Airflow, respiratory effort, oximetry |
| Type 4 | Oximetry study | Oximetry |
EEG: electroencephalogram; EOG: electro-oculogram; EMG: electromyogram; ECG: electrocardiogram.