Table 4.

Clinical medical students' self-reported level of education about ATPs and traditional cigarettes.

Topic	Overalla (n = 887)	p- value b	Year 1 students* (n = 202)	Year 2 students* (n = 203)	Year 3 Students* (n = 203)	Year 4 students* (n = 183)	Year 5 Students* (n = 96)	p-value c (by class)
Second smoke effects
Cigarettes	3.46	<0.0001	3.38	3.33	3.61	3.52	3.48	0.0385
ATPs	2.52		2.48	2.48	2.46	2.37	2.83	0.0248
Health effects
Cigarettes	3.68	<0.0001	3.60	3.57	3.78	3.73	3.70	0.1686
ATPs	2.64		2.66	2.51	2.55	2.50	2.96	0.0075
Epidemiology
Cigarettes	3.08	<0.0001	2.66	2.88	3.22	3.32	3.34	<0.0001
ATPs	2.38		2.19	2.34	2.33	2.28	2.77	0.0010

^*Means that data are represented by the average score of different grades.

^aMeans the average for the whole grade p-value.

^bAnalyze group differences within the different topic and refer to the Wilcoxon Test p-value.

^cAnalyze group differences on different grades and refer to the Kruskal-Wallis Test.