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. 2009 Apr 3;75(11):3777–3786. doi: 10.1128/AEM.02763-08

TABLE 3.

Demographic and clinical data for cases and controls

Characteristic Periodontitis cases (n = 5) Healthy controls (n = 5)
Age (yr)a
    Mean (SD) 48.20 (10.04) 47.20 (8.29)
    Median 43 45
    Range 39-63 40-61
No. of males/no. of females 2/3 2/3
Plaque indexb
    Median 0.79 0.71
    Range 0.71-1.00 0.54-0.96
Bleeding indexc
    Median 0.50 0.04
    Range 0.17-1.17 0.00-0.17
Probing depth for healthy sample sites (mm)d
    Mean (SD) 2.52 (0.46) 2.70 (0.41)
    Range 2.00-3.00 2.00-3.00
Probing depth for “diseased” sample sites (mm)
    Mean (SD) 6.98 (0.61) NAe
    Range 6.00-9.00 NA
a

The P value for age is 1.000.

b

The P value for the plaque index is 0.402.

c

The P value for the bleeding index is 0.015.

d

The P value for the probing depth for healthy sample sites is 0.663.

e

NA, not applicable.