Table 2.

Distribution of respondents according to their year of study and mean score of knowledge

Year	n	Mean score	Mean rank	Kruskal--Wallis	P
First year	68	4.10±0.35	139.86	73.395	<0.01
Second year	128	4.27±0.40	205
Prefinal year	187	4.52±0.32	293.45
Final year	68	4.38±0.39	242.35
Internship	23	4.34±0.44	237.8
Total	474	4.36±0.39

Bold values represent statistical significance