<qa>  What is the mean change in four subjective metrics?Analysis will also examine the mean change in four subjective metrics, 1 Calgary Sleep Apnea Quality of Life Index, 2 Visual Analog Scale of snoring, 3 Epworth Sleepiness scale, and 4 Reflux Symptom Index. Again, means and standard deviations will be calculated and student t test will be used to assess statistical significance. 