Case-number Week Aspartame Belief Headaches Exposure-days 1 1 0 0 3 7 1 2 1 0 0 7 1 3 0 0 3 7 1 4 0 0 1 7 1 5 1 0 0 7 2 1 0 1 0 7 2 2 1 1 5 7 2 3 0 1 2 7 3 1 0 1 2 7 3 2 1 1 2 7 3 3 0 1 3 7 3 4 0 1 2 7 3 5 1 1 2 7 4 1 0 0 0 7 4 2 0 0 0 7 4 3 1 0 0 7 4 4 1 0 0 7 4 5 0 0 0 7 5 1 0 0 3 7 5 2 1 0 0 7 5 3 0 0 2 7 5 4 1 0 0 7 5 5 0 0 0 7 6 1 0 0 1 7 6 2 1 0 1 7 6 3 0 0 0 7 6 4 0 0 3 7 6 5 1 0 1 7 7 1 0 0 1 7 7 2 0 0 1 7 7 3 1 0 4 7 7 4 0 0 2 7 7 5 1 0 3 7 8 1 0 0 1 7 8 2 0 0 1 7 8 3 1 0 0 7 8 4 1 0 1 7 8 5 0 0 1 2 9 1 0 1 2 7 9 2 1 1 2 7 9 3 0 1 0 7 9 4 0 1 1 5 10 1 0 0 0 7 10 2 0 0 0 7 10 3 1 0 0 7 10 4 0 0 0 7 10 5 1 0 0 7 11 1 0 0 0 7 11 2 0 0 3 7 11 3 1 0 1 7 11 4 0 0 0 7 11 5 1 0 1 3 12 1 0 0 0 7 12 2 0 0 0 7 12 3 1 0 5 7 12 4 1 0 0 7 12 5 0 0 0 7 13 1 0 1 7 7 13 2 1 1 7 7 13 3 0 1 7 7 13 4 1 1 6 7 13 5 0 1 7 7 14 1 0 0 2 7 14 2 0 0 2 7 14 3 1 0 1 7 14 4 0 0 0 7 14 5 1 0 2 7 15 1 0 0 0 7 15 2 0 0 3 7 15 3 1 0 2 7 15 4 1 0 1 7 15 5 0 0 1 7 16 1 0 1 1 7 16 2 1 1 3 7 16 3 0 1 1 7 17 1 0 0 4 7 17 2 1 0 1 1 18 1 0 1 0 7 18 2 1 1 1 7 18 3 0 1 1 7 18 4 0 1 1 7 18 5 1 1 0 7 19 1 0 1 0 7 19 2 1 1 1 7 19 3 0 1 1 7 19 4 1 1 0 7 19 5 0 1 1 7 20 1 0 1 1 7 20 2 0 1 6 7 20 3 1 1 1 2 21 1 0 1 1 7 21 2 1 1 2 7 21 3 0 1 3 7 21 4 0 1 3 7 21 5 1 1 6 7 22 1 0 0 2 7 22 2 1 0 1 7 22 3 0 0 0 7 22 4 0 0 0 7 22 5 1 0 1 7 23 1 0 0 7 7 23 2 1 0 2 7 23 3 0 0 3 7 23 4 1 0 3 7 23 5 0 0 2 7 24 1 0 1 1 7 24 2 0 1 0 7 24 3 1 1 1 7 24 4 0 1 0 7 24 5 1 1 2 7 25 1 0 1 1 7 25 2 1 1 6 7 25 3 0 1 1 7 25 4 1 1 7 7 25 5 0 1 0 7 26 1 0 0 0 7 26 2 0 0 1 7 27 1 0 0 3 7 27 2 0 0 3 7 27 3 1 0 3 7 27 4 0 0 0 7 27 5 1 0 2 4