bruxism night time scores how to test parallelness of two distributions how to measure bruxism duration of bruxism how to get nph and sph how to test for parallelness of two distributions how to measure nightly duration how to test for parallelness of two distributions? how to measure sleep for bruxism how to calculate nph for bruxism how to measure bruxism scores how to find the parallelity of two distributions how to check for bruxism how to calculate bruxism score how many consecutive nights bruxism what is the baseline bruxism time how to test for parallelness of two distributions duration of bruxism ppt how is duration of sleep measured how to measure bruxism for duration