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Table 1 Baseline characteristics of the study

From: Changes of macular pigment optical density in elderly eyes: a longitudinal analysis from the MARS study

Number of study participants 237
Age at MARS II (years)  
 Mean 70.5
 Standard deviation 4.8
Number of study eyes 380 (100 %)
Number of eyes from females 244 (64.2 %)
Eyes with  
 Early AMD 150 (39.5 %)
 No AMD 230 (60.5 %)
MPOD distribution  
 Ring-like 87 (22.9 %)
 Intermediate 69 (18.2 %)
 Monotonically decreasing 224 (58.9 %)
Follow-up time (years)  
 Median 3.96
 Interquartile range 0.12
 Minimum 2.94
 Maximum 5.26
  1. MPOD macular pigment optical density