Table 1.

Descriptive patient data

	Number
Total	561
Sex
Male	287
Female	274
Age (years; mean ± SD)	57.2 ± 10.4
Observation period (months; mean ± SD)	105.7 ± 44.5
Smoker
Yes	200
No	361
Systemic disease
Healthy	332
Diabetes	19
Osteoporosis	4
Circulatory diseases	93
Combined*	14
Other**	99

*Combined: systemic disease combination of diabetes and circulatory disease (n = 13); osteoporosis and circulatory disease (n = 1)

**For example, dyslipidemia, asthma, thyroid disease