Table 2.

Descriptive statistics of participants who were screened for the Dutch Periodontal Screening Index (DPSI): gender, age and education

Variable	n	Mean (DPSI)	SD
Gender
Male	178	3.55	1.35
Female	573	3.19	1.27
Age
Young	347	2.81	1.23
Moderate	324	3.58	1.20
Old	89	3.95	1.28
Education
Low	67	3.62	1.32
Middle	295	3.32	1.28
High	346	3.15	1.30
Other	32	3.25	1.31