Table 2 Descriptive statistics for oral function by CKD stage (N = 109)

Oral function, mean ± SD or median (IQR)

ODK (pa)/sec

6.0 (4.8–6.7)

6.2 (5.8–6.7)

6.0 (4.8–6.8)

6.2 (4.8–6.9)

5.4 (3.5–6.3)

ODK (ta)/sec

5.8 (4.9–6.4)

6.0 (5.2–6.5)

5.6 (5.1–6.3)

5.9 (4.9–6.6)

5.6 (4.7–6.2)

ODK (ka)/sec

5.2 (4.0–6.0)

5.6 (4.4–6.0)

5.5 (4.0–6.1)

5.2 (3.9–6.2)

5.0 (3.6–6.2)

Mastication ability

150.0 ± 61.5

166.0 ± 67.5

153.0 ± 66.0

142.7 ± 55.0

140.1 ± 62.2

RSST number of times

2.0 (1.0–4.0)

2.4 ± 1.8

2.7 ± 2.1

2.9 ± 2.5

2.1 ± 1.4

Tooth condition, median (IQR)

Number of teeth

22.0 (9.0–26.0)

24.5 (15.8–26.0)

21.0 (6.0–26.0)

22.0 (9.8–28.0)

22.0 (10.5–27.0)

Functional teeth

28.0 (25.0–28.0)

27.0 (24.0–28.0)

28.0 (25.8–28.0)

28.0 (23.0–28.0)

27.0 (24.0–28.0)