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Table 1 Descriptive characteristics for longitudinal twin samples from LSADT

From: Genetic and environmental determinants of O6-methylguanine DNA-methyltransferase (MGMT) gene methylation: a 10-year longitudinal study of Danish twins

  MZ twins DZ twins All
Male Female Total Male Female Total
n, pair 6 10 16 5 20 25 41
Age, 1997
 Mean 76.97 76.13 76.45 76.79 76.05 76.19 76.29
 Median 76.67 75.61 76.31 75.85 75.68 75.71 75.79
 Min 75.21 73.21 73.21 74.66 74.05 74.05 73.21
 Max 79.51 81.75 81.75 79.32 79.59 79.59 81.75
Age, 2007
 Mean 86.82 86.04 86.33 86.55 85.86 86.00 86.13
 Median 86.27 85.25 85.97 85.95 85.60 85.68 85.73
 Min 85.23 83.30 83.30 84.13 84.00 84.00 83.30
 Max 89.53 91.70 91.70 89.13 89.49 89.49 91.70
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