This represents a 40% decrease among girls, and a 25% decrease among boys.
The drop was driven by a dramatic decrease among men.
In this same one-year period, however, there was a sharp decrease among white football players, from 61percentto55 55.
Extended stays in space are hard on the human body, since in conditions of microgravity the spine stretches out, muscles tend to atrophy and bone density can decrease, among other problems.
Although General Motors spent the most on advertising in the first half of 2001, CMR reported, at $1.1 billion, it also had the highest percentage decrease among the top advertisers, down 23.5percentt from $1.44 billion.
Socially, volunteers reported a 16.7percentt increase in the number of people they felt they could turn to for help, compared with a 25.3percentt decrease among the control group.
Dr. Bernhard Schwartlander, the director of H.I.V.-AIDS programs at the World Health Organization, said the decrease among young people was encouraging but emphasized that South Africa could hardly afford to level off with roughly a quarter of the adult population H.I.V.-positive.
The 612,000 city residents under 6 represented a decrease among black and Hispanic youngsters of about 41,000 and 10,000, respectively, and an increase of nearly 12,000 whites and 9,000 Asians.
Meanwhile, the corresponding decrease among boys was less than 1%%.
For wounds, trends were more varied and for concussions, a decrease among the oldest age groups was seen.
The expression level of P53 showed a substantial decrease among the treated groups in a time-dependent manner.
