Table 2.

The distribution of bone mineral density by the community periodontal index.

CPI	N	Bone Mineral Density
		Mean	SD	Min	Max
0	483	−0.5459	0.96	−3.33	6.40
1	997	−0.5635	1.02	−4.90	3.40
2	3547	−0.6083	1.04	−5.81	4.80
3	1845	−0.7029	1.01	−4.48	4.70
4	426	−0.7433	1.00	−3.10	3.70

ANOVA test: F = 5.93, p < 0.0001.