From: Assessment of periodontal knowledge following a mass media oral health promotion campaign: a population-based study
Seen
Not seen
No. (%)
Unit change of knowledge score
−2
0.0
6
(1.6)
−1
17
(11.0)
51
(13.8)
0
56
(36.1)
168
(45.5)
1
58
(37.4)
121
(32.8)
2
18
(11.6)
20
(5.4)
3
(3.9)
(0.9)
Total
155*
(100.0)
369*