Table 4.

Association of allele length with risk of PD, AD, and ET diseases.

	Association of allele length with risk of disease in comparison with controls (n = 314)
	PD (n = 911)		AD (n = 279)		ET (n = 152)
	OR (95% CI)	P	OR (95% CI)	P	OR (95% CI)	P
Genotype		0.0081		0.54		0.64
S/S	1.00 (reference)		1.00 (reference)		1.00 (reference)
S/I	1.37 (1.05, 1.79)		0.83 (0.55, 1.26)		0.88 (0.57, 1.37)
I/I	2.03 (1.17, 3.54)		0.91 (0.40, 2.06)		1.30 (0.56, 3.04)
Repeats on larger allele continuous
	1.06 (1.01, 1.10)	0.001	0.99 (0.93, 1.05)	0.69	0.96 (0.89, 1.03)	0.27

OR, odds ratio; CI, confidence interval; S, short allele (<7 units); I, intermediate allele (≥7 units).

Odds ratios and corresponding p-value results from logistic regression models adjusted for age at onset and gender. After Bonferroni adjustment for multiple testing, p ≤ 0.0083 were considered statistically significant (6 tests).