options ls=72; data acs1; input ffq1 ffq2 fr1 fr2 fr3 fr4 age bmi; ffq = (ffq1 + ffq2) / 2; fr = (fr1 + fr2 + fr3 + fr4) / 4; bmigroup = 'LowBMI'; if bmi gt 22.5 and bmi le 27.5 then bmigroup = 'MidBMI'; if bmi gt 27.5 then bmigroup = 'HighBMI'; label ffq = Mean of the Questionnaires fr = Mean of the 24--hour recalls age = Age bmi = Body Mass index bmigroup = BMI Category; cards; 47.25000 36.04000 42.02000 29.01000 24.02000 43.83000 57.00000 21.23000 28.74000 27.43000 29.14000 27.97000 24.64000 20.40000 61.00000 21.78000 6.72000 22.84000 16.70000 28.29000 26.21000 29.58000 64.00000 25.44000 23.04000 23.65000 27.80000 22.61000 18.09000 36.40000 69.00000 20.81000 53.12000 46.42000 4.25000 8.36000 35.89000 33.51000 62.00000 30.37000 35.35000 33.33000 34.87000 31.19000 22.27000 32.79000 61.00000 19.58000 33.18000 29.72000 14.01000 25.77000 20.60000 19.00000 62.00000 20.47000 14.86000 19.91000 13.36000 27.73000 20.34000 10.29000 70.00000 20.01000 33.07000 31.08000 38.26000 26.55000 23.63000 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30.25000 24.31000 26.87000 23.62000 24.70000 54.00000 23.18000 35.44000 32.02000 36.45000 44.04000 32.38000 40.03000 60.00000 22.91000 22.55000 21.88000 22.91000 33.38000 14.35000 27.06000 61.00000 23.34000 44.69000 37.10000 32.31000 34.03000 38.04000 41.52000 65.00000 22.78000 33.94000 36.99000 34.92000 33.19000 31.93000 29.69000 60.00000 23.24000 36.47000 25.90000 22.25000 41.06000 37.57000 24.19000 54.00000 22.27000 38.61000 37.12000 35.16000 41.88000 46.82000 37.73000 63.00000 31.52000 42.92000 39.38000 48.14000 36.09000 34.80000 39.02000 64.00000 27.33000 43.04000 39.61000 28.56000 42.55000 37.27000 32.68000 52.00000 21.40000 proc sort; by bmigroup; proc univariate plot; var ffq; by bmigroup; title % Calories from fat in Food Frequency Questionnaires for BMI Groups; proc univariate plot; var fr; by bmigroup; title % Calories from fat in 24--hour recalls for BMI Groups; proc glm data=acs1; class bmigroup; model fr ffq = bmigroup; means bmigroup / lsd scheffe tukey; contrast ' Low - High' bmigroup -1 1 0; contrast 'Medium - High' bmigroup -1 0 1; contrast 'Medium - Low ' bmigroup 0 -1 1; estimate ' Low - High' bmigroup -1 1 0; estimate 'Medium - High' bmigroup -1 0 1; estimate 'Medium - Low ' bmigroup 0 -1 1; run;