During the second phase of data collection, we followed essentially the same sampling strategy.
Those last three scoring methods essentially provided the same sample-level mean and standard deviation scores when compared with each other and across all data treatments, whereas maximum score was affected more by the applied data treatments.
However, as can be seen in Supporting Information Figure 1, two replicate spectra of the same sample are essentially superimposed.
A second method, diff2 = (ychillp8 - yp8fat)/0.5(ychillp8 + yp8fat), in which the difference between measurements is scaled by the size of the measurement, yielded essentially the same list of samples, so only diff1 was used in this study.
The main conclusions on group differences in earnings trajectories and the role played by work history before the base year are essentially the same from these restricted samples as those from the unbalanced sample.
We do not think that this selection of subjects attending the imaging procedures will introduce any major bias that will influence the results since all basic characteristics were essentially the same in the total sample and the subsamples attending the DXA and MRI scans.
On the African side, we used HGDP Yoruba (21 samples; essentially the same population as HapMap YRI) and San (5 samples); on the European side, we used French (28 samples; very close to CEU), Han (34 samples), and Papuan (17 samples).
Of the total of 62 intervals sampled 1.5 3 m apart vertically in India and 42 similarly-spaced intervals in Bangladesh, essentially the same proportion of groundwater samples contains 50 200 μg L-1 As (44 and 43%, respectively).
The characteristics of the women in the sample were, at registration, essentially the same as those in the sampling frame (Niswander and Gordon 1972).
All copy numbers were calculated with the ΔCT method using a reference gene and calibrator sample (essentially the same as the ΔΔCT method [ 2] but calculated in a different order) on a home-made spreadsheet for the calculations.
