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. 2018 Sep 17;148(12):1931–1937. doi: 10.1093/jn/nxy168

TABLE 2.

Serum stable isotope ratios at baseline and postfeeding of the postmenopausal women in the NPAAS-FS included in this study1

Baseline Postfeeding Difference
CIR, ‰ −19.9 ± 0.6 (−21.4, −17.6) −20.0 ± 0.5 (−21.7, −18.0) −0.03 ± 0.34 (−1.1, 1.2)
NIR, ‰ 8.8 ± 0.4 (8.0, 9.9) 8.9 ± 0.5 (7.8, 10.0) 0.02 ± 0.26 (−0.7, 0.7)
SIR, ‰ 1.6 ± 0.9 (−0.2, 4.2) 1.6 ± 0.9 (−0.7, 4.2) 0.03 ± 0.74 (−2.5, 1.9)

1Values are means ± SDs (ranges), n = 147. CIR, carbon isotope ratio; NIR, nitrogen isotope ratio; NPAAS-FS, Nutrition and Physical Activity Assessment Study Feeding Study; SIR, sulfur isotope ratio.