Sentences with phrase «derived age model»

Not exact matches

To assess the robustness of the results of our regression analysis, we performed covariate adjustment with derived propensity scores to calculate the absolute risk difference (details are provided in the Supplementary Appendix, available with the full text of this article at NEJM.org).14, 15 To calculate the adjusted absolute risk difference, we used predictive margins and G - computation (i.e., regression - model — based outcome prediction in both exposure settings: planned in - hospital and planned out - of - hospital birth).16, 17 Finally, we conducted post hoc analyses to assess associations between planned out - of - hospital birth and outcomes (cesarean delivery and a composite of perinatal morbidity and mortality), which were stratified according to parity, maternal age, maternal education, and risk level.

We carried out extensive atmosphere model fitting for the companions and the host star in order to derive their age, mass, and metallicity.

In 2010, a new study (which included better model atmosphere fitting) argued that the system is around six billion years old, even older than estimates of 3.7 to 4.3 billion years derived from a 2009 study based on mass and evolutionary models for the two brown dwarf companions Ba and Bb (Liu et al, 2010; and King et al, 2009), which are much older than an earlier age estimate of between 0.8 and 2.0 billion years based on the star's rotational speed (press release; Scholz et al, 2003; and Lachaume et al, 1999).

Here, thickness data, which are sorely lacking but available in a few locations as the result of International Polar Year efforts and from satellite - derived estimates of ice age or type, constrain modeled thickness distributions.

For each of these three regional sample collections, a statistical model was derived expressing expected ring - width in that area as a function of tree age for that region and tree species.

We test whether there are age differences in the beliefs people hold about specific emotion regulation strategies derived from the process model of emotion regulation and whether profiles of emotion beliefs vary by age.

Methods We used factor analysis to derive summary measures of parenting practices, and regression analyses and path modelling to test associations between these and cognitive function at age 8 years in 1690 first offspring of the British 1946 birth cohort.