The effect of age, gender and relative body weight on vitamin D levels

I need to do data analysis (quantitative) through SPSS, and interpret the results including results table, for descriptive analysis and linear and logistic regression analysis to define the relationship and association as mentioned in the aim/objectives (attachment file). then write down the discussion to justify the results and using biological mechanism justification from scientific references (medical/nutritional journals), for each sentence the reference should be included

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