Table 2.
Observed frequencies of AMD status and prevalence estimates for two classification systems.
| Observed frequencies | Prevalencea [95% CI] | |
|---|---|---|
| Clinical Classification | ||
| No AMD, no apparent aging changes, % | 27.5 | 25.8 [23.0; 28.5] |
| No AMD, normal aging changes, % | 23.0 | 22.8 [20.0; 25.6] |
| Early AMD, % | 26.4 | 27.5 [24.5; 30.6] |
| Intermediate AMD, % | 17.0 | 16.7 [14.2; 19.2] |
| Late AMD, % | 6.1 | 7.2 [5.3; 9.1] |
| Three Continent AMD Consortium Severity Scale | ||
| No AMD, % | 77.1 | 76.3 [73.4; 79.2] |
| Mild early AMD, % | 8.9 | 8.8 [7.0; 10.7] |
| Moderate early AMD, % | 4.2 | 4.2 [2.9; 5.5] |
| Severe early AMD, % | 3.7 | 3.5 [2.3; 4.8] |
| Late AMD, % | 6.1 | 7.2 [5.3; 9.1] |
Shown are the observed frequencies and the standardized prevalence estimates (using the Bavarian population) for each AMD status based on the Clinical Classification9 and the Three Continent AMD Consortium Severity Scale10 in the 1,040 analyzed individuals (at least one eye gradable). Details by sex and age-group are shown in Supplementary Tables 5 and 6.
Abbreviations: AMD = age-related macular degeneration; CI = confidence interval;
aFive-year-age group- and sex-standardized prevalence estimates based on the weights from the Bavarian population and corresponding 95% confidence intervals.