Table 1 Subjects enrolled in the Study of Health in Pomerania (SHIP) and assessed for periodontitis and their smoking state. Shown: the numbers of subjects, ratios, or the median and range of parameters where appropriate

Number of subjects

559

544

298

Female/male

388/171

206/338

164/134

Age, mean ± SD (range 40 – 60)

51.3 ± 5.7

49.7 ± 5.8

48.8 ± 5.7

Number of teeth, median *

22

21

19

% Attachment loss ≥ 3 mm, median

48.2

68.7

75.0

% Attachment loss ≥ 4 mm, median

18.8

34.0

47.5

% Attachment loss ≥ 6 mm, median

0

5.0

8.0

% Probing depth ≥ 4 mm

6.1

12.5

17.9

Probing depth, mean mm

2.5 ± 0.7

2.8 ± 0.8

2.9 ± 0.8

Diabetes

28 (5.0%)

38 (7.0%)

15 (5.0%)

High School = yes

101 (18.1%)

87 (16.0%)

40 (13.4%)