Table 1. Characteristics of 518 study subjects.

	Results
Gender (women)	384 (74.1)
Age (years)	72.6 ± 7.6
Height (cm)	156.2 ± 8.4
Weight (kg)	56.9 ± 9.6
Number of teeth lost	8.4 ± 7.9
Self-reported periodontal condition (some symptoms)	165 (31.9)
Smoking (yes)	167 (32.2)
Daily number of tooth brushing	2.4 ± 1.2
Diabetes mellitus (yes)	54 (10.4)
Steroid use (yes)	14 (2.7)
Rheumatoid arthritis (yes)	27 (5.2)
Problematic wound healing after last tooth extraction	31 (6.0)

Results are given as the mean ± SD or number of subjects (%).