Table 3.

Incidence of Parkinson Disease in Patients with and without Gout

	Patients with Gout		Patients without Gout		Rate ratio (95% CI)	P value
	No. of Parkinson Disease	Per 1000 person-years	No. of Parkinson Disease	Per 1000 person-years
Total	339	3.56	247	2.63	1.36 (1.15–1.60)	<.001*
Age
≥ 65	214	12.37	159	9.31	1.33 (1.08–1.64)	.006*
< 65	125	1.60	88	1.14	1.40 (1.06–1.86)	.015*
Sex
Male	204	3.13	154	2.41	1.30 (1.05–1.62)	.013*
Female	135	4.49	93	3.10	1.45 (1.11–1.91)	.006*
Follow-up
0–1	33	702.13	17	257.58	2.73 (1.48–5.22)	<.001*
1–5	90	62.54	65	37.06	1.69 (1.21–2.36)	<.001*
≥ 5	216	2.30	165	1.79	1.29 (1.05–1.59)	.014*

CI indicates confidence interval; * indicates statistical significance