To assess the effectiveness of integrated therapy over the past 3 y on the recipient autistic children and its correlation with the following variables - age at admission, duration of therapy given and initial severity of symptoms. The index study was a retrospective study with 18 autistic children as subjects; the maximum duration of intervention was 3 y. The integrated approach consisted of special education using principles of applied behavior analysis, occupational and speech therapy. The progress records, the occupational therapy and the speech therapy progress reports were tabulated as data. The Childhood Autism Rating Scale (Schopler, Reichler and Renner, 1986) was used for evaluation of severity of symptoms at admission and in present day. The data was then compared and analyzed. The present study showed significant positive results. Only few domains requiring very high integrated cognitive and sensorimotor functioning showed non-significant results. Age at intervention correlated negatively and, duration of therapy given and initial severity of symptoms correlated positively with effectiveness of therapy. Continuous feedback and modification of the therapy is required to maintain performance and develop target interventions for problematic areas identified. Longitudinal as well as comparative studies are required to better understand the benefits of integrated approach.