Table 4.

Odds Ratios and 95% Confidence Intervals for PD risk for Hp phenotypes and stratified by ever/never smoking status.

	OR	(95% CI)	p-value	Age-adjusted p-value
Total
Hp 2-1 vs (Hp 11+Hp 22 )	1.16	(0.75–1.81)	0.493	0.322
Hp 2-1 vs Hp 22	1.11	(0.69–1.79)	0.669	0.846
Hp 2-1 vs Hp 11	1.33	(0.68–2.60)	0.400	0.264
Never-smokers
Hp 2-1 vs (Hp 11+Hp 22 )	0.80	(0.44–1.48)	0.486	0.580
Hp 2-1 vs Hp 22	0.80	(0.41–1.57)	0.519	0.550
Hp 2-1 vs Hp 11	0.81	(0.34–1.92)	0.664	0.844
Ever-smokers
Hp 2-1 vs (Hp 11+Hp 22 )	1.98	(1.01–3.89)	0.046	0.028
Hp 2-1 vs Hp 22	1.61	(0.79–3.25)	0.187	0.113
Hp 2-1 vs Hp 11	5.18	(1.13–23.80)	0.031	0.029