sex ratios

The provinces in this last group are the only ones with close to normal sex ratios.

This fits with previous findings from non-Western cultures documenting female-biased sex ratios as a function of maternal condition.

The dominant flea species with enough sampling individuals were chosen as the targets for the analysis of sex ratios .

India does not produce figures for sex ratios at birth, so its numbers are not strictly comparable with the others.

Parts of India have sex ratios as skewed as anything in its northern neighbour.

But this is not always true and, where it is, the road to normal sex ratios is winding and bumpy.

Within China and India the areas with the worst sex ratios are the richest, best-educated ones.

But more immediately relevant to game theory are the sex ratios in certain parasitic wasp species that have a large excess of females.

The sex ratios continue to be distorted in these states, but they are not getting worse.

Undertake new epidemiological surveys to establish a "gold standard" of sex-ratios.

He found higher rates of entrepreneurship in areas with more skewed sex ratios.

Objective To estimate the sex ratios at birth for perinatal child in hospital in Hubei.

Other countries have wildly skewed sex ratios without China's draconian population controls (see chart 1).

This is a nationwide problem, but Guangdong has consistently had some of the worst sex ratios.

and in the worst-affected areas, sex ratios are becoming less distorted.

In India, too, there is a correlation between provincial crime rates and sex ratios.

Sex ratios for selected mental disorders such as major depressive disorder and anxiety disorder are much higher in women than men.

They had comprehensive data about academic performance and classroom sex ratios in the high schools from 1993 to 2000.

We have never seen these sex ratios before.

That is why sex ratios are most distorted in the modern, open parts of China and India.

China also faces one of the most skewed sex ratios in the world: men outnumber women 1. 2 to 1.

If sex ratios stay the same, 600, 000 missing girls this year will become, in 18 years' time, over 10m missing future brides.

There are even signs of distorted sex ratios in America, among various groups of Asian-Americans.

Data from the 1982 census indicate, for example, that for many occupations, sex ratios in rural areas are twice as high as in cities.

Their sex ratios rose from normal levels in 1991 to 115-120 by 2000.

But Ms. Oster, 28 years old, says newly available data prove that the hepatitis B virus can't explain China's skewed sex ratios.