The figures are not strictly comparable, because sample surveys show the sex ratio at birth, whereas the census gives it among infants up to the age of six.

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To be fair, Hulbert does note that he was looking at a small sample size and that there have been instances where the CAPE ratio has stayed at high levels before a bear market set in.

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Braun learned Oct. 19 his sample was positive for elevated testosterone, which he said was at a ratio that was the highest ever recorded in baseball's testing program.

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On the basis of the national sample surveys (NSS), they calculate that India's sex ratio at birth swung from 924 females per 1, 000 males in 2004-05 to 977 in 2011, a stunning turnaround in favour of girls.

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The most likely alternatives, butter and pig fat, were ruled out using a technique called isotope-ratio mass spectrometry, which measures the molecular weights of the chemicals in a sample.

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But the report authors say the survey sample represents about 2.8% of the farming industry in Wales, a higher ratio than those that may be questioned in a political opinion poll, for example.

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Although the findings of the studies are mostly consistent in showing a similar magnitude hazard ratio, estimates of the effectiveness of sipuleucel-T are imprecise due to the relatively small total sample size of the clinical trials, and unmeasurable biases due to potential confounding effects of frozen salvage product and post-progression treatments.

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