This method has its disadvantages in that it is a slow and expensive process. An article in the Journal of Sleep Medicine shows that variability exists between sleep technologists in the scoring of sleep studies [3]. This results in the failure to achieve widespread evaluation of sleep quality. Therefore it is desirable to have a quantitative measure of quality of sleep, so that a sleep professional both in clinical and research fields can refer to and calculate the subject’s level of sleep quality. The Sleep Index parameter would be in the same way as someone’s cholesterol level, that is if the cholesterol level is below 200, it is normal and if it exceeds 200 it would be high. Similarly if the Sleep Index number is below a set number (that is to be determined) the quality of sleep is good and if it is above, the quality of sleep is bad. So it would be very useful to develop a single number indicator that would reflect the quality of sleep. Hence the main goal of this study is to propose such a measure and test its efficacy in a sample population of normal and OSA subjects.