At the end of the 8th week , the scores of the HAMD factor 1 ( anxiety/somatic system ) , factor 5 ( retardation ) and factor 6 ( sleep disturbance ) were all reduced as compared with those before treatment in the two groups ( all P < 0.01 ) ; the results in the observation group were better than those in the control group ( P < 0.05 , P < 0.01 ) .