Table 4 Comparison of non‐smoking cases with non‐smoking controls for passive smoking*.

Passive smoking exposure	Odds ratios (95% confidence interval)
	All non‐smoking cases (n = 158) v non‐smoking controls (n = 110)	Cases with CNV (n = 124) v controls (n = 110)	Cases with GA (n = 61) v controls (n = 110)
No†	1.00	1.00	1.00
Yes	1.87 (1.03 to 3.40)	1.81 (0.97 to 3.39)	1.50 (0.69 to 3.27)
p Value (two tailed)	0.04	0.06	0.30

*The logistic regression model included age and sex.

†Denotes reference category.