Evaluation of an educational intervention in oral health for primary care physicians: a cluster randomized controlled study

Table 3 Linear regression models for predicting change in the total knowledge score and the three domains

Explanatory variables	Standardized regression coefficient Beta	P-value of Wald test	95% confidence interval for Beta
Explanatory variables	Standardized regression coefficient Beta	P-value of Wald test	Lower bound	Upper bound
Model 1: total score
Group A intervention	0.64	< 0.001	0.377	0.655
Group B intervention	0.035	0.677	−1.14	1.75
Age	0.06	0.525	− 0.06	0.11
Gender^a	0.09	0.311	− 0.77	2.39
Working place^b	0.09	0.306	− 0.66	2.07
Total score at baseline	−0.30	< 0.001	− 0.63	− 0.20
Model 2: paediatric domain score
Group A intervention	0.69	< 0.001	−1.62	2.74
Group B intervention	0.03	0.723	−0.49	0.70
Age	0.04	0.672	−0.03	0.04
Gender^a	0.06	0.539	− 0.46	0. 88
Working place^b	0.11	0.235	−0.23	0.91
Paediatric score at baseline	−0.17	0.0350	−0.43	−0.08
Model 3: dental domain score
Group A intervention	0.58	< 0.001	−1.02	1.92
Group B intervention	0.19	0.235	−0.19	0.78
Age	0.09	0.338	−0.02	0.04
Gender^a	0.02	0.809	− 0.45	0.58
Working place^b	0.04	0.684	−0.36	0.54
Dental score at baseline	−0.44	< 0.001	−0.74	− 0.34
Model 4: medical domain score
Group A intervention	0.42	< 0.001	−0.82	2.14
Group B intervention	−0.04	0.696	−0.81	0.54
Age	0.04	0.657	−0.03	0.05
Gender^a	0.11	0.262	− 0.32	1.15
Working place^b	0.09	0.343	−0.33	0.94
Medical score at baseline	−0.42	< 0.001	−0.67	− 0.29

ISSN: 1472-6831