These closely related trends are driven by forces beyond republican protagonists.
The problem is that there is not a solution that fits everyone, and a lot of these trends are driven by manufacturers.
Teenage pregnancy rates (which closely follow adult fertility trends) are driven by 18- and 19-year-old women and their partners, including men in their 20's, who are responsible for far more pregnancies than younger people.
With the exception of aerobics, those trends were driven by popularity with men, and over all, men account for 50 percent of the athletic shoe market, women for 35 percent and children for 15 percent, Mr. Powell said.
That suggests the trends are driven mainly by deep-seated forces, such as the changing social attitudes that accompanied the contraceptive pill, and the increased participation of women in the labour force.But in Britain some of these trends have gone further than elsewhere.
These anti-democratic trends are driven in part by a supposedly meritocratic selection process with high school students from the upper strata of the middle class performing better on SAT and ACT tests than those from poor and working class families.
Clearly, then, determining whether trends are driven or passive is an important aspect of their study.
I have the feeling he would have quite liked both movements and would have taken great pleasure in the fact that in many ways those trends were driven by his company's mobile devices, the iPhone and the iPad.
That said, energy trends are driven by a mix of political, social and technological developments, with an unusually strong role for distant global changes (such as policy decisions in Saudi Arabia) to influence trends in the United States.
If TDR trends are driven primarily by persons with drug-resistant HIV who are viremic despite taking ART, changes in ART that achieve better suppression of drug-resistant HIV should rapidly decrease TDR rates.
