Table 2.

Comparison between the people who agreed to participate and those that declined

	Agreed to participate (total: 450 people)	Declined to participate (total: 388 people)	p valueb
Age in years
Mean (SD)	83.39 (5.50)	84.01 (5.78)	0.119
Sex
Male (%)	205 (45.6%)	185 (47.7%)	0.539
Female (%)	245 (54.4%)	203 (52.3%)
Number of disease categoriesa
Mean (SD)	7.37 (2.48)	7.35 (2.55)	0.904

SD standard deviation

^aDefined as diseases diagnosed according to different ICD-10 chapters

^bp-value was calculated using the t-test for continuous variables and the chi-squared test for categorical variables