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We obtained survey data from 12 countries in Europe and compared them with previous research, from four large US states.
We obtained survey responses from 69 experts representing 30 universities: 41% molecular biologists, 26% physiologists, 20% ecologists, and 13% other subdisciplines.
We obtained survey data at all sites through written questionnaires that we administered at baseline (time 1), followed by a 4-month intervention period in the intervention sites.
In addition to mortality data, we obtained survey and census data comparing variables such as smoking, diet, and socioeconomic status from Antofagasta and the rest of Chile in order to evaluate potential confounding from these factors.
In order to increase sample size, we also obtained survey data from 18 knee replacement surgery patients (8 refused to participate) and 9 hip replacement surgery patients (5 refused to participate) seen by one orthopedic surgeon at a community practice clinic in Southern California.
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There are limits to what we can say from survey data – it is difficult to obtain survey information from the very top of the distribution (for example, it is unlikely that Bill Gates has been included in the US sample we analysed), so it is impossible to test with our data whether this is true at the very top of the income scale.
The most effective method for obtaining survey data was through the hand held devices and interviewers.
ACASI has proven to be a reliable way to obtain survey data assessing risk behaviors [ 43].
The overall goal was to obtain survey data from 1000 participants with approximately 200 from each cohort.
A second goal of the NIH contract was to obtain survey sequences (∼400 000 bp) for 100 phylogenetically representative oral taxa (8).
The takeoff angle with respect to the sample was 45°, and a pass energy of 100 eV was set to obtain survey spectra between 0 and 1200 eV.
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CEO of Professional Science Editing for Scientists @ prosciediting.com