On the most controversial provision of the law -- a mandate requiring people to have health care coverage -- 51% of those questioned said they opposed it and 47% favored it, a gap within the survey's margin of error.

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The survey found that a widening gap in physician satisfaction between the two treatments.

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Depending on which survey you favour, this gap could be as much as a whopping 31%.

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The survey suggests there is a communication gap.

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The Gallup survey shows a 21 percentage point gap between the fraction of unemployed people that would prefer to be self-employed and the slice that thinks becoming self-employed in the next five years is feasible.

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But if you scratch a little further in the survey, you do find a gender gap.

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"We are concerned about the continuing gap between anonymous reporting of incidents in the Armed Forces Continuous Attitude Survey and the Recruit Training Survey and the actual numbers of complaints, " they said.

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The survey quotes research that says closing the male-female employment gap would have huge economic implications for developed economies, boosting U.S. GDP by as much as 9%, eurozone GDP by as much as 13% and Japanese GDP by as much as 16%.

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Boys were found to be reading at a lower level than girls - but the What Kids Are Reading survey, which has been running for five years, says the gap has been narrowing.

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Even more striking, Dice says that when it first started the survey four years ago, there was also no evidence of a gender pay gap, when it controlled for education and experience.

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The survey by polling company CSA, confirming a recent trend as the incumbent narrowed the gap with Mr. Hollande was carried out after the killings of three children and a teacher at a Jewish school in Toulouse on Monday, but before police surrounded the house of the suspected killer.

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The survey also found that socioeconomic factors such as income and education do not fully explain the gap.

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In fact, the online survey of over 300 women, conducted in early June, uncovered a significant infidelity forgiveness gap between single and married women.

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