Table 2.

Dummy Variable Coding for K-3 Sample. Four groups are coded by three variables, as follows:

	K, not 3 code	3, not K code	BothK3 code
Martial in K, not 3	1	0	0
Martial in 3, not K	0	1	0
Martial in K and 3	0	0	1
Martial in neither K nor 3	0	0	0