Table 2

 AMD causing visual impairment associated with smoking by age

Age groupOdds ratio*95% CIp Value
Mantel-Haenszel estimate of the odds ratio controlling for the effects of age  =  1.78 (95% confidence intervals 1.26 to 2.52) p = 0.001.
*Odds of being a case if current smoker divided by odds of being a case if a non-smoker.
75–792.891.40 to 5.940.003
80–841.851.09 to 3.150.022
85–891.380.69 to 2.780.361
90+0.930.25 to3.440.915