But senior Interior Ministry officials acknowledge that those statistics understate the actual Russian losses.

But those statistics may well understate Mr. D'Amato's political position.

And Mr. Ng says he thinks even those statistics understate the case.

If anything, some college officials said, the statistics may understate the level of student wealth because they rely on a survey of freshmen.

National data collection agencies accept that statistics seriously understate women's contribution as workers.

Moreover, these statistics probably understate the truth because many citizens abroad do not file tax forms.

While the statistics do understate today's true rate of economic progress, they always have.

And the statistics surely understate the true increase in purchasing power.

If anything, population experts believe the statistics understate the trend because of the difficulty of measuring a highly transient population of young adults.

But the statistics may understate the problem, because H-1B workers' dependence on their employers may make them reticent.