A Comparison Group for the Navy Repatriated Prisoners of War from Vietnam: Selection Procedures Used and the Lessons Learned.

摘要

There were 138 U.S. Navy prisoners of war repatriated from North Vietnam and returned to the United States during the period February through April 1973. These individuals had an extensive repatriation physical examination and annual physical examinations since their return to the United States. In 1974 authorization was obtained to select a matched comparison group for the 138 Navy repatriated prisoners of war. This (man for man) match was based on the use of nine variables: viz: (1) casualty date, (2) age, (3) year group, year of entry into the Navy, (4) job designator, (5) education, (6) marital status, (7) number of flight hours, (8) pay grade (rank), and (9) type of aircraft flown at time of shootdown. This report describes the details of the selection process and speculation as to why some invited comparison subjects declined to participate. The selection of a comparison group was effectively accomplished. (Author)