Table 4.

Confirmatory factor analysis of the POP knowledge scales with the model fit indices

	German scale		Russian scale
	17 items	16 items	17 items	16 items
Chi-squareda	138.921	121.156	153.072	127.554
p scaledb	0.102	0.120	0.019	0.058
Comparative fit index	0.951	0.952	0.711	0.793
Non-normed fit index	0.944	0.945	0.670	0.761
Root mean square error of approximation	0.038	0.038	0.052	0.047

^aValues closer to zero indicate a better fit

^bValues greater than 0.05 indicate a good fit