Table 1 Participant characteristics.

From: Plasma phospholipid n-3 polyunsaturated fatty acids and major depressive disorder in Japanese elderly: the Japan Public Health Center-based Prospective Study

 

Individuals with MDD

Individuals without MDD

P value

(n = 103)

(n = 1,110)

Age, years ± SD

74.1 ± 5.5

72.8 ± 5.5

0.02

Male (%)

35.9

43.2

0.16

History of depression (yes), %

6.8

1.7

0.0007

History of diabetes (yes), %

9.7

9.9

0.95

History of cancer (yes), %

13.6

12.4

0.73

History of stroke (yes), %

1.0

4.3

0.098

History of myocardial infarction (yes), %

1.9

1.7

0.86

Prevalence of mild cognitive impairment, n (%)

44 (43)

390 (35)

0.12

  1. The chi-square test was used for categorical variables and the t-test was used for continuous variables. A p value less than 0.05 was considered statistically significant.
  2. Abbreviation: MDD, major depressive disorder.
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