Table 3 PD, CAL, REC, missing teeth and teeth with mobility (presented as mean, standard deviation and 95% CI for mean), stratified by CAL and PD thresholds (%) (≥4 and ≥6 mm) and age group.

From: Study of Periodontal Health in Almada-Seixal (SoPHiAS): a cross-sectional study in the Lisbon Metropolitan Area

Measures

18–30

31–40

41–50

51–60

61–70

71–80

>80

rho* (p-value)

Total

Mean (SD) [95% CI]

Mean (SD) [95% CI]

Mean (SD) [95% CI]

Mean (SD) [95% CI]

Mean (SD) [95% CI]

Mean (SD) [95% CI]

Mean (SD) [95% CI]

Mean (SD) [95% CI]

Mean PD (mm)

1.8 (0.4)

[1.7–1.9]

1.9 (0.6)

[1.7–2.0]

1.9 (0.7)

[1.8–2.1]

2.0 (0.8)

[1.9–2.1]

2.0 (0.9)

[1.9–2.1]

1.9 (0.7)

[1.8–2.0]

1.9 (0.7)

[1.7–2.0]

−0.027 (0.382)

1.9 (0.8)

[1.9–2.0]

PD ≥ 4 mm (%)

3.8 (5.4)

[1.4–4.1]

6.3 (13.6)

[3.2–9.5]

7.9 (13.8)

[5.5–10.2]

9.5 (15.5)

[6.9–12.1]

9.5 (17.4)

[7.7–11.4]

7.6 (14.3)

[5.8–9.4]

6.4 (13.6)

[3.4–9.4]

0.015 (0.614)

8.0 (15.0)

[7.1–8.9]

PD ≥ 6 mm (%)

0.0 (0.2)

[0.0–0.1]

1.0 (4.2)

[0.1–2.0]

1.3 (4.4)

[0.5–2.0]

1.6 (3.9)

[1.0–2.3]

2.2 (6.5)

[1.5–2.9]

1.8 (6.1)

[1.1–2.6]

0.9 (3.1)

[0.3–1.6]

0.047 (0.126)

1.6 (5.3)

[1.3–1.9]

Mean CAL (mm)

1.8 (0.4)

[1.7–1.9]

2.0 (0.8)

[1.8–2.2]

2.2 (1.0)

[2.1–2.4]

2.6 (1.5)

[2.4–2.9]

2.9 (1.6)

[2.8–3.1]

2.9 (1.4)

[2.8–3.1]

3.4 (1.5)

[3.1–3.7]

0.349 (<0.001)

2.7 (1.4)

[2.6–2.8]

CAL ≥ 4 mm (%)

3.1 (5.5)

[1.7–4.5]

7.9 (15.9)

[4.2–11.5]

14.8 (21.0)

[11.2–18.4]

22.4 (26.7)

[17.9–26.9]

27.9 (28.7)

[24.8–31.0]

30.1 (27.3)

[26.6–33.5]

40.4 (30.8)

[33.7–47.2]

0.416 (<0.001)

24.1 (27.4)

[22.5–25.8]

CAL ≥ 6 mm (%)

0.1 (0.2)

[0.0–0.1]

2.1 (9.5)

[0.0–4.2]

4.0 (10.7)

[2.2–5.8]

8.9 (18.0)

[5.9–12.0]

12.1 (22.0)

[9.7–13.5]

10.9 (18.4)

[8.6–13.2]

15.0 (20.7)

[10.4–19.5]

0.336 (<0.001)

9.2 (18.4)

[8.1–10.3]

Mean REC (mm)

0.0 (0.0)

[0.0–0.0]

0.1 (0.3)

[0.0–0.2]

0.3 (0.5)

[0.2–0.4]

0.7 (0.9)

[0.5–0.8]

1.0 (1.1)

[0.8–1.1]

1.1 (1.1)

[0.9–1.2]

1.6 (1.2)

[1.3–1.8]

0.562 (<0.001)

0.8 (1.0)

[0.7.0.8]

Missing Teeth (n)

0.9 (1.2)

[0.6–1.2]

2.3 (3.3)

[1.5–3.0]

5.1 (5.1)

[4.2–6.0]

8.2 (5.5)

[7.2–9.1]

10.8 (6.5)

[10.0–11.5]

12.0 (6.6)

[11.2–12.8]

14.0 (7.5)

[12.3–15.6]

0.544 (<0.001)

9.1 (7.0)

[8.6–9.5]

Teeth with mobility (n)

0.1 (0.4)

[0.0–0.2]

0.3 (1.4)

[0.0–0.6]

0.6 (1.5)

[0.3–0.8]

1.3 (2.5)

[0.9–1.8]

1.4 (2.6)

[1.1–1.7]

1.1 (1.9)

[0.9–1.4]

1.3 (2.2)

[0.8–1.8]

0.197 (<0.001)

1.1 (2.2)

[0.9–1.2]

  1. *Overall trend across age groups assessed by Spearman’s rank correlation coefficient (rho). Significant correlations identified in bold (p < 0.05).
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