Table 2.

Initial Parkinson's disease symptoms and age at onset (years).

Initial Symptom	Total (%)	M/F	15−49	50−59	60−69	70−79	≥80	Avg	Range
Tremor	112 (62.92%)	66/46	2 (40.00%)	19 (61.29%)	45 (65.22%)	42 (65.61%)	4 (36.36%)	61.19±9.74*	34−94
Rigidity	38 (21.34%)	20/18	1 (20.00%)	7 (22.58%)	13 (18.84%)	12 (18.78%)	5 (45.46%)	56.32±9.62	31−86
Bradykinesia	28 (15.73%)	16/12	2 (40.00%)	5 (16.13%)	11 (15.94%)	10 (15.61%)	2 (18.18%)	59.39±7.35	45−87

Note: M/F: male/female; Avg: average age at onset of symptom; Range: range of ages for specific symptom onset, ^*p<0.05 tremor group vs. rigidity group.

Two patients with at least two initial symptoms were excluded from the table.