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Table 1 Demographic characteristics of the study group

From: The effects of interactions between selenium and zinc serum concentration and SEP15 and SLC30A3 gene polymorphisms on memory scores in a population of mature and elderly adults

Characteristic

 

Total number of subjects

240

Age (years)

63.37 ± 8.05

Gender (% men)

59 (24.6)

Years of education

10.69 ± 4.55

Hormonal replacement therapy, women only (%)

64 (26.7)

Age at completion of education (years)

27 ± 13.82

Years without studying

35.15 ± 17.78

Cigarette smoking

 Never

169 (70.4)

 Past

61 (25.4)

 Current

9 (3.8)

Alcohol consumption

 Yes

131 (54.6)

 No

109 (45.4)

Memory scores

 Short-term verbal memory

0.016 ± 1.056

 Long-term verbal memory

−0.013 ± 0.57

 Short-term visual memory

−0.007 ± 1.316

 Long-term visual memory

−0.117 ± 1.269

 Verbal learning test

−0.010 ± 1.266

  1. The values shown are mean ± standard deviation or numbers and percentages in parentheses