BACKGROUND Seasonal variations in suicide deaths and attempted suicides have been reported for many countries. Recent research has suggested that seasonal patterns of suicide deaths have diminished considerably. The seasonality pattern between attempts and completed ones are not the same. This paper is the first one to examine seasonal variation between suicide deaths and attempts simultaneousl...

The seasonal variation of coronary heart disease mortality rates in New Zealand is analysed by age, sex and race using monthly national mortality data for the period 1970-83. A 35% variation from the winter peak to summer low is found in the crude mortality rate, but the size of the seasonal variation is age-dependent, being more pronounced in the elderly, and more so in males than in females. ...

In aggregate unadjusted data, measured Solow residuals exhibit large seasonal variations. Total Factor Productivity grows rapidly in the fourth quarter at an annual rate of 16 percent and regresses sharply in the ...rst quarter at an annual rate of ¡24 percent. This paper considers two potential explanations for the measured seasonal variation in the Solow residual: labor hoarding and increasin...

Abstract One way to cope with predictable environmental fluctuations that affect several generations of individuals is through nongenetic transgenerational effects. Ancestors match the phenotype their descendants environment latter are expected experience. In facultatively sexual rotifer life cycles, sex linked production diapausing eggs, which enables survival between growing seasons. some spe...

The incidences of dengue hemorrhagic disease (DHF) over the long term exhibit a seasonal behavior. It has been hypothesized that these behaviors are due to the seasonal climate changes which in turn induce a seasonal variation in the incubation period of the virus while it is developing the mosquito. The standard dynamic analysis is applied for analysis the Susceptible-ExposedInfectious-Recover...