Admissions for pelvic inflammatory disease have also fallen which is consistent with evidence of a falling prevalence of PID observed in GP records.
Vascular disease mortality has declined rapidly in most Western countries, against a background of improved treatments and falling prevalence of smoking, but rising obesity.
Although a falling prevalence of childhood asthma has also been detected in Canada 6 and Australia, 7 it has been suggested that, globally, rises remain more common than falls.
Therefore the reason for the observed falling prevalence of cows with deep udders over the course of the lactation is likely to be that the farmers are culling the old cows with deep udders.
To explain a falling prevalence of silicosis in this one shaft during the period 2000 to 2008, the above processes would have to have accelerated or changed in recent years.
Denmark, Finland, Italy and the Netherlands showed a falling prevalence of disability, Belgium and Sweden were characterized by a rising trend, while for the United Kingdom and France it was not possible to draw any definitive conclusion because different sources provided diverging results [ 4].
Likewise, fall prevalence rates of northern pintails and Eurasian teal, 10.7% and 18.2%, respectively, were within the range of such rates in mallards.
The total fall prevalence rate of 19.8% was slightly lower than a similar American population-based retrospective study that reported falls among 22% of older adults on Medicare living in the community [ 13].
18, 27, 28 The ranges of fall prevalence rates in East Asian women (two studies) and East Asian men (two studies) were, respectively, 0.163 0.258 and 0.087 0.184.
The ranges of fall prevalence rates in East Asian women (two studies) and East Asian men (two studies) were, respectively, 0.163 0.258 and 0.087 0.184.
