Holben et al. (A-19) designed a study to evaluate selenium intake in young women in the years

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Holben et al. (A-19) designed a study to evaluate selenium intake in young women in the years of puberty. The researchers studied a cohort of 16 women for three consecutive summers. One of the outcome variables was the selenium intake per day. The researchers examined dietary journals of the subjects over the course of 2 weeks and then computed the average daily selenium intake. The following table shows the average daily selenium intake values in ð Þ mg=d for the 16 women in years 1, 2, and 3 of the study.

Subject Year 1 Year 2 Year 3 Subject Year 1 Year 2 Year 3 1 112.51 121.28 94.99 9 95.05 93.89 73.26 2 106.20 121.14 145.69 10 112.65 100.47 145.69 3 102.00 121.14 130.37 11 103.74 121.14 123.97 4 103.74 90.21 135.91 12 103.74 121.14 135.91 5 103.17 121.14 145.69 13 112.67 104.66 136.87 6 112.65 98.11 145.69 14 106.20 121.14 126.42 7 106.20 121.14 136.43 15 103.74 121.14 136.43 8 83.57 102.87 144.35 16 106.20 100.47 135.91 Source: Data provided courtesy of David H. Holben, Ph.D. and John P. Holcomb, Ph.D.

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