21.   The rate of unemployment is measured in rolling three-month periods using household surveys conducted by the National Institute of Statistics.

22.   The survey is used by policy-making agencies of the federal government, especially for providing assistance to business.

23.   The survey will be used for everything from finding the sources of distant X-ray bursts to catching the glint of asteroids whose orbits cross that of Earth.

24.   Those investors and traders who say the Bank of Japan uses the survey as a guide to interest rate policy pay close attention to its results.

25.   Using a survey to determine access to health care, they found that where access was poor, hospital admission rates were higher.

26.   But some cities have used previous surveys of migrants to force the jobseekers out.

27.   Districts often use surveys to measure whether a program is effective -- and whether it should continue to receive funding.

28.   Health experts commonly use surveys of pregant women to track the movement of the disease in the rest of the population and estimate total levels of infection.

29.   Lim said the survey may be used by JWT clients as a guide in corporate planning.

30.   Republicans, in general, contend the follow-up survey should be used as an accuracy check only, and not to adjust the raw results of the census.