Interventions with each single system(case) was studied over a period of eight months, during which they were interview and need-based psycho-social intervention was provide. Such a format of analysis to assess the efficacy of interventions is known as a time series based analysis.
the advantages this form of analysis is it gives the researcher freedom to investigate the pattern of intervention (B) effects across time. Te data collected in the study was collected over specific periods based on time intervals, with intervention and without intervention. Hence, the qualities of the date had been treated as that following a time series or a longitudinal study design.