This was done before and after key public announcements were made between January 2000 and January 2009 about 23 positive and 36 negativephase III clinical trials in which a cancer drug was tested.
She said that this year's conditions were partly caused by a move to a negativephase of the North Atlantic Oscillation which would be likely to lead to more frequent cold, drier winters - like the 1960s - and also wetter summers for 10-20 years.
That, however, is likely to change, Subramanian said, noting that energy appears to be emerging from the negative revision phase that began last autumn.