I am an economics student and we are tasked to make a mini thesis. I was thinking in getting smoking demand determinants and the effect of sin tax (excise tax on tobacco here in the Philippines and was passed quite recently) on smoking demand. Determinants would be income, educational attainment, marital status, gender, age, and employment status. I was wondering if I could conduct a Chow test to see if there were any structural changes to the smoking demand determinants after the sin tax. I'm not entirely sure how to do it because what we just saw in class was a two variable model, how would I be able to extend that to the smoking demand determinant model?

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