Table 3

Results of meta-regression analysis

FactorNumber of study populationsRegression coefficient95% CIP value
Early AMD
Average age of the sample population161.0551.015, 1.0970.010
Ratio of sex-specific incidence (female vs male)72.2580.043, 117.7990.619
Region (Europe vs the rest of the world)191.8540.880, 3.9050.098
Ethnicity (white vs others)242.2351.117, 4.4690.025
Publication year (after 2010 vs not)190.6430.305, 1.3550.228
Follow-up duration (less than 7 years vs not)190.5970.278, 1.2820.172
Classification system (WARM vs others)190.5210.263, 1.0320.060
Late AMD
Average age of the sample population181.0931.045, 1.1440.001
Ratio of sex-specific incidence (female vs male)86.4561.769, 23.5610.011
Region (Europe vs the rest of the world)232.5341.033, 6.2200.043
Ethnicity (white vs others)284.0291.951, 8.3200.001
Publication year (after 2010 vs not)230.9630.363, 2.5580.937
Follow-up duration (less than 7 years vs not)231.1830.429, 3.2630.734
Classification system (WARM vs others)231.4990.568, 3.9550.396