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. Author manuscript; available in PMC: 2016 Apr 19.
Published in final edited form as: Neuroepidemiology. 2012 Dec 6;40(2):142–146. doi: 10.1159/000342762

Table 1.

Baseline cohort characteristics

Characteristics Vision Impairment
Present (n=188) Not Present (n=526) test statistic and p-value
Age, mean (SD), y 82.0 (6.9) 78.8 (6.9) t712=5.4, p<0.001
Women, No. (%) 139 (73.9%) 402 (76.4%) X21=0.5, p=0.5
Education, mean (SD), y 14.2 (2.9) 14.8 (2.9) t712=−2.5, p<0.001
Global Cognitive Level, mean (SD), z-score unit 0.03 (0.54) 0.24 (0.46) t291=−4.7, p<0.001
Neuroticism Total Score, mean (SD), out of 48 15.7 (7.4) 15.7 (7.1) t712=0.1, p=0.9