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The study compared trees that had been thinned by machine with those that had not been thinned.

VOA: special.2009.11.10

The researchers say that was compared with only fifty-one of those who received the vaccine.

VOA: special.2009.10.13

The study compared patients who took three hundred twenty-five milligrams of aspirin at least two times a week with those who did not use aspirin.

VOA: special.2009.09.01

It measures prices compared with those in January 2000 and creates a three-month moving average.

WSJ: US home prices rise 10.9 pct., most since 2006

And the liberties of serfs in Europe were manifold compared with those of their Russian counterparts.

FORBES: Fact and Comment

The report also showed high commuting flows for British workers compared with those in other rich countries.

ECONOMIST: Call of the south