That figure is four times higher than in the eight nations now in the European Union.

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The murder rate in Russia is three or four times higher than in New York City.

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You know how it goes: because of various loopholes and carve-outs that have built up over the years, some industries pay an average rate that is four or five times higher than others.

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The increase is predicted to be three to four times higher in developing regions than in developed areas.

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Shelter warns bad housing is also linked to a three to four times higher risk of mental health problems.

BBC: Cot in damp room - copyright Jan Erik Posth