Appendix: Statistics from the National Vietnam Veterans Readjustment Study
All tables here are generated by the author's work on the data from the National Vietnam Veterans Readjustment Study, a United States government-commissioned survey of a stratified random sample of Vietnam-era veterans, done in the 1980s. This data comes from the 1,638 theater veterans, that is, veterans who were actually in Vietnam.
GROUP LABELS AND STATISTICS
The groups are labeled this way: No-Kill those who answered no, they did not kill in combat in Vietnam OR answered that they “only saw” killing of civilians Kill those who answered yes, they did kill or thought they killed someone in Vietnam OR that they were “directly involved” in killing of civilians (or prisoners, or women, children and old people). This appendix is primarily intended for those who are familiar with statistics and interested in checking the numbers. Those who are a little less familiar but still curious on numbers need to know:
|• p value measures whether or not a different mean score between two groups is due to chance or is instead statistically significant. It is accounted as not due to chance if below .05. |
|• “Cohen's d” is a measure of effect size, of how large the difference is. As a rule of thumb, .2 is small, .5 is moderate, and .8 is large. If the difference is not statistically |