International Journal of Dentistry / 2009 / Article / Tab 1

Research Article

Determination of Cortisol and Dehydroepiandrosterone Levels in Saliva for Screening of Periodontitis in Older Japanese Adults

Table 1

Subject characteristics by smoking status based on PD levels.

Number of teeth with PD    mm*
Never-smokersSmokers
CharacteristicsNoneLowHigh valueNoneLowHigh value

Number59411328228
Age in years
 Mean67.469.469.5.04366.869.769.6 .065
  (SD)(4.4)(3.8)(4.2)(4.5)(5.2)(3.7)

Number of teeth
 Mean23.222.021.5.56525.020.222.5 .030
 (SD)(7.0)(6.1)(5.0)(5.1)(7.3)(6.5)

Site with BOP
 Mean2.94.58.0.0032.64.75.5.149
 (SD)(4.0)(4.6)(8.0)(3.8)(4.4)(6.9)

Sex
 Male13 (22)11 (27) 5 (38).46027 (96)21 (96)8 (100).833

Social class
 Non-workers54 (92)33 (80)12 (92).49427 (97)20 (91)8 (100).203

Medication32 (54)22 (54) 6 (46).86613 (46)14 (64) 6 (75).256

Use of interdental brush
 Yes 32 (54)21 (51) 7 (54).95512 (43)10 (46) 5 (63).612

Dental visit in past 12 months
 Yes31 (48)24 (59) 8 (62).75917 (61)12 (54)3 (38).506

Frequency of tooth brushing (per day)
1 time3 (5)7 (17) 2 (15).3897 (25)8 (36)7 (88).029
 2 times36 (61)23 (56) 7 (54)14 (50)9 (41)0 (0)
3 times20 (34)11 (27) 4 (31)7 (25)5 (23)1 (13)

Self-rated health status
 Very good16 (27)17 (41)10 (77).01612 (43)10 (46) 2 (25).001
 Good 38 (64)20 (49) 2 (15)16 (57)12 (55) 3 (38)
 Moderate5 (8) 4 (10)1 (8)0 (0)0 (0)3 (38)

*Defined by the number of teeth (no teeth, less than three teeth, three or more teeth) with PD    mm. Categorical variables indicate the number of subjects (%). Differences between groups were tested using a chi-square test for categorical variables and ANOVA for continuous variables. PD: probing depth (mm). BOP: bleeding on probing.

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