Table 3. The learning effectiveness in evidence-based knowledge and self-efficacy in practice between two groups over times.

Variable	GEE (Interaction between time and groups)
	β	SE	95%CI		Wald X2	P-value
			Lower	Upper
Knowledge
Group (Experimental group vs. Control group)	-6.12	3.11	-12.21	-.04	3.89	.049*
Learning effect
Posttest vs. Pretest	9.73	1.86	6.09	13.37	27.48	<.001***
Posttest2 vs. Pretest	9.66	2.51	4.74	14.57	14.84	<.001***
Group* Learning effect
Posttest vs. Pretest	11.98	2.58	6.91	17.04	21.47	<.001***
Posttest2 vs. Pretest	4.74	3.34	-1.82	11.29	2.01	.157
Self-efficacy
Group (Experimental group vs. Control group)	-0.85	3.10	-6.93	5.23	.08	.784
Discrepancy
Posttest vs. Pretest	18.53	1.71	15.18	21.89	117.43	<.001***
Posttest2 vs. Pretest	16.92	2.07	12.85	20.98	66.56	<.001***
Group* Discrepancy
Posttest vs. Pretest	7.73	3.22	1.43	14.03	5.78	.016*
Posttest2 vs. Pretest	6.03	3.01	.13	11.92	4.02	.045*

*P<0.05;

**P<0.01;

***P<0.001