Table 4.

Factors associated with higher knowledge score about antibiotics.

	Unstandardized Coefficients		Standardized Coefficients	t	p-Value
	B	Std. Error	beta
Number of periodontitis patients treated per week	0.381	0.263	0.224	9.715	<0.001
Date of graduation (DDS)	−0.212	0.071	−0.171	3.625	0.003
Post graduate certificate in periodontology	0.423	0.185	0.144	2.290	0.023
Specialized/orientated practice	0.287	0.180	0.099	1.592	0.112

Notes: Coefficients are relative to the intercept: 2.556 ± 0.263, t = 9.715, p < 0.001. n =272 values, R² = 0.134, p < 0.001, B = unstandardized regression coefficient beta, t = t-test, a p-value < 0.05 was considered as significant. Factors tested but not included in the final model: other university degree in Periodontology and Implantology, other type of professional practice.