Characteristics of subjects without AMD, with early AMD and with any AMD.

Data presented are no. (%), except for age, which is presented as mean (SD). Analysis was done by individual level.
a Number of subjects with missing data for the following variables: current smokers, 8; hypertension, 20; diabetes, 55; hyperlipidaemia, 61; chronic kidney disease, 1.
b For comparison between individuals without AMD vs with early AMD, using chi-square tests for categorical variables, and two sample t-tests for continuous variables.
c For comparison between individuals without AMD vs with any AMD, using chi-square tests for categorical variables, and two sample t-tests for continuous variables.
Characteristics of subjects without AMD, with early AMD and with any AMD.