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-smokers
Smokers
Characteristics
None
Low
High
value
None
Low
High
value
Number
59
41
13
28
22
8
Age in years
Mean
67.4
69.4
69.5
.043
66.8
69.7
69.6
.065
(SD)
(4.4)
(3.8)
(4.2)
(4.5)
(5.2)
(3.7)
Number of teeth
Mean
23.2
22.0
21.5
.565
25.0
20.2
22.5
.030
(SD)
(7.0)
(6.1)
(5.0)
(5.1)
(7.3)
(6.5)
Site with BOP
Mean
2.9
4.5
8.0
.003
2.6
4.7
5.5
.149
(SD)
(4.0)
(4.6)
(8.0)
(3.8)
(4.4)
(6.9)
Sex
Male
13 (22)
11 (27)
5 (38)
.460
27 (96)
21 (96)
8 (100)
.833
Social class
Non-workers
54 (92)
33 (80)
12 (92)
.494
27 (97)
20 (91)
8 (100)
.203
Medication
32 (54)
22 (54)
6 (46)
.866
13 (46)
14 (64)
6 (75)
.256
Use of interdental brush
Yes
32 (54)
21 (51)
7 (54)
.955
12 (43)
10 (46)
5 (63)
.612
Dental visit in past 12 months
Yes
31 (48)
24 (59)
8 (62)
.759
17 (61)
12 (54)
3 (38)
.506
Frequency of tooth brushing (per day)
1 time
3 (5)
7 (17)
2 (15)
.389
7 (25)
8 (36)
7 (88)
.029
2 times
36 (61)
23 (56)
7 (54)
14 (50)
9 (41)
0 (0)
3 times
20 (34)
11 (27)
4 (31)
7 (25)
5 (23)
1 (13)
Self-rated health status
Very good
16 (27)
17 (41)
10 (77)
.016
12 (43)
10 (46)
2 (25)
.001
Good
38 (64)
20 (49)
2 (15)
16 (57)
12 (55)
3 (38)
Moderate
5 (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.
