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Correlation Research Study Name of the Student Professor’s Name Correlation Research Study Study Design and Sampling The study may be conducted as a cross-sectional randomized trial. The randomization would be based on purposive sampling. This means that individuals belonging to the age range of 12 years to 18 years (with a history of playing video games for more than 10 hours/per day) would be only included in the study. Stratified random sampling may be implemented to control the confounding variables. The confounding variables that may impact the end-points include gender, age, socioeconomic status and psychological status of the study participants. Hence, the study should be designed to negate the impacts of confounding variables. Hence, analysis may be performed with respect to age, gender, socio-economic status and psychological status. Hence, randomization should be appropriately conduced for selecting the study participants. First of all, the study participants might be segregated into 5 age groups (12 to 13 years, 13years to 14years, 14 years to 15 years, 15 years to 16 years and 16 years to 18years). Secondly, the participants would be stratified according to hours of exposure to video games. The lowest and highest duration of exposure would be selected for forming the class intervals. The next stratification would be based on socioeconomic status. The socioeconomic status would be determined from per capita income of the family members. The study participants may be broadly segregated into “poor”, “low” and “high” socioeconomic backgrounds. The study participants should be also segregated based on psychological status. This can
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