Table 5

 Comparison of cases with controls by years since quitting smoking*

Years since quitting smokingOdds ratios (95% confidence interval) for AMD
All cases (n = 435) v controls (n = 280)All cases with CNV (n = 329) v controls (n = 280)All cases with GA (n = 174) v controls (n = 280)
*The logistic regression model included age and sex.
†Denotes reference category.
Non-smoker†1.001.001.00
More than 20 years0.91 (0.62 to 1.34)0.85 (0.57 to 1.28)0.92 (0.56 to 1.50)
Less than 20 years1.74 (1.05 to 2.99)1.70 (1.00 to 2.89)1.83 (0.97 to 3.47)
0 years (current smoker)2.13 (1.08 to 4.22)2.00 (0.99 to 4.05)2.14 (0.92 to 4.97)
p Value (two tailed) for years since quitting smoking0.010.020.05