Secondary analyses of CG severity and CG symptom and impairment questionnaire measures confirmed that CGT conferred a significantly greater change in illness severity ( 22 individuals [ 35.2 % ] in the CGT group vs 41 [ 64.1 % ] in the IPT group were still at least moderately ill [ P = .001 ] ) , rate of CG symptom reduction ( 1.05 ICG points per week for CGT vs 0.75 points per week for IPT [ t633 = 3.85 ; P < .001 ] ) , and the rate of improvement in CG impairment ( 0.63 work and Social Adjustment Scale points per week with CGT and 0.39 points per week with IPT [ t503 = 2.87 ; P = .004 ] ) .