Table 2.

Comparison of mean scores among three groups by analysis of variance

Variable	Profession	N	Mean	Std. deviation	Std. error	F value	P value
Have you observed any black/dark spaces in the corner of mouth when people smile?	Layperson	35	0.71	0.46	0.08	4.027	0.021*
	Prosthodontists	38	0.95	0.23	0.04
	Orthodontists	16	0.88	0.34	0.09
	Total	89	0.84	0.37	0.04
Does the appearance of dark spaces make the smile of a person more attractive?	Layperson	35	0.06	0.24	0.04	6.538	0.002*
	Prosthodontists	38	0.34	0.48	0.08
	Orthodontists	16	0.44	0.51	0.13
	Total	89	0.25	0.43	0.05

*Statistically significant