21.   Pikrallidas stressed that the study was based on data provided by local governments, not AAA.

22.   Since the study was based on records of live births only, spontaneous abortions or miscarriages could not be evaluated, the researchers said.

23.   Since Columbia does not make partnership records public, the study was based on limited information.

24.   The ASU study is based largely on altercation forms and surveys completed by guards.

25.   The center based its study on death certificates and emergency room reports.

26.   The Boston College study is based on modest assumptions about growth in wealth compared with historical experience.

27.   The Ford study was based on federal crash statistics.

28.   The KPMG study is based on announced transactions.

29.   The latest study was based on the fact, which was already apparent to scientists, that males tend to have a different pattern of finger lengths than females.

30.   The new study is based on a sample of child care centers in Atlanta, Boston, Detroit, Phoenix and Seattle.