Punishment (reward) was higher for selfish (generous) investments and back-transfers when (i) investors were in-group rather than outgroup, and (ii) trustees were in-group rather than outgroup, especially when (iii) participants received oxytocin rather than placebo.
In round III participants were presented with the mean score of each research priority from the second questionnaire, and again asked to consider the importance of each topic on a 7-point Likert scale.
In addition, we used data from the NHANES III-Linked Mortality file in which the mortality status of NHANES III participants, ≥17 years of age, was determined by probabilistic matching between NHANES III participants and the U.S. National Death Index (NDI) [53].
For this purpose, mean creatinine values from the Rotterdam Study, by sex-specific age groups (<60, 60 69, ≥70 years), were aligned with the corresponding corrected means from the Third National Health and Nutrition Examination Survey (NHANES III) participants [personal communication with Joe Coresh].
Three a priori subgroup analyses will be performed using a test for statistical interaction to assess whether the intervention effect size differs according to: (i) baseline physiological falls risk [ 18]; (ii) number of participant-reported falls in the year prior to the trial; and (iii) participant-reported outdoor activity levels during the trial as assessed with the AAP [ 14].
Efforts to trace all NHANES III participants who died may have been unsuccessful in some cases.
After these exclusions, we included a total of 13,958 NHANES III participants in the present analyses.
Third National Health and Nutrition Examination Survey (NHANES III) participants aged ≥18 years (n = 5,511) were the subjects of the study.
In Wave III, participants were asked the same question about their drinking since Wave I (June , 1995.
Adult NHANES III participants were followed for mortality through 31 December 2000.
Mortality follow-up through the year 2000 is now available for NHANES III participants.
