Table 1.

Characteristics of Parkinson's disease and controls (N = 4126)

Variable	Patients With Parkinson's Disease (n = 2063)	Controls (n = 2063)	P Value*
Follow‐up, mean ± SD	1.1 ± 0.6	1.1 ± 0.6	0.9
Age in years, mean ± SD	78.6 ± 8.4	78.4 ± 8.9	0.5
Gender, % of men	48.3	48.1	0.9
Gender, % of women	51.7	51.9	Not tested
Number of medical conditions, mean ± SD	2.6 ± 2.3	2.5 ± 2.2	0.7
Living condition, % living alone	92.1	92.6	0.5

^*As a result of the matching procedure, the groups did not differ in any characteristics (P > 0.05).

SD, standard deviation.