Table 1.
Characteristics of Participants in the OPEN (1999–2000), Energetics (2006–2009), AMPM (2002–2004), NBS (2004–2005), and NPAAS (2007–2009) Studies
| Study Name | First Author, Year (Reference No.) | Organization | No. of Participants | Mean Age (SD), years | % of Subjects Who Were Male | Mean BMIa (SD) | % Who Were Non-Hispanic White | % Who Were Non-Hispanic Black | % With a College Education | % With a Postgraduate Education |
|---|---|---|---|---|---|---|---|---|---|---|
| OPEN | Subar, 2003 (6) | National Cancer Institute | 484 | 53.4 (8.3) | 54 | 27.9 (5.3) | 83 | 6 | 54 | 32 |
| Energetics | Arab, 2010 (7) | University of California, Los Angeles | 263 | 37.8 (12.6) | 36 | 26.8 (6.2) | 49 | 51 | 81 | 15 |
| AMPM | Moshfegh, 2008 (8) | United States Department of Agriculture | 524 | 49.5 (10.9) | 50 | 26.6 (4.6) | 77 | 13 | 54 | 39 |
| NBS | Neuhouser, 2008 (9) | Women's Health Initiative | 544 | 70.9 (6.3) | 0 | 28.2 (5.5) | 83 | 11 | 40 | 31 |
| NPAAS | Prentice, 2011 (10) | Women's Health Initiative | 450 | 70.5 (6.0) | 0 | 28.5 (6.4) | 64 | 18 | 38 | 38 |
Abbreviations: AMPM, Automated Multiple Pass Method; BMI, body mass index; NBS, Nutrition Biomarker Study; NPAAS, Nutrition and Physical Activity Assessment Study; OPEN, Observing Protein and Energy; SD, standard deviation.
a Weight (kg)/height (m)2.