Results of univariate F tests indicated a significant reduction of all main outcome measures : perceived stress ( F [ 1,32 ] = 13.42 ; p = < 0.001 ) ; depression ( F [ 1,32 ] = 6.92 ; p = 0.013 ) ; and overall teacher burnout ( F [ 1,32 ] = 6.18 ; p = 0.018 ) .