Take the two data set(NHANES AND SLQ_J) and 1. Combine them and exclude ages less than 18 and missing data for smoking data and missingSLQ120( How often feel overly sleepy during day?)2. combine variable SMQ040(Do you now smoke cigarettes?) AND SMQ020(Smoked at least 100 cigarettes in life) AND Make them into three categories and make variable SLQ120 into 3 Categories. 3. Create a demographic summary/race, age, Marriage,bmi, gender and occupation variable (OCQ260 - Description of job/work situation)
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