Table 1 Baseline characteristics of the ESTHER and KORA study population.

From: Subjective mental health, incidence of depressive symptoms in later life, and the role of epigenetics: results from two longitudinal cohort studies

 

ESTHER study N (%)

KORA study N (%)

N Total

1492*

890*

Age

(mean, SD)

62.5 (6.4)

55.7 (6.2)

Sex

Women

748 (50.1)

456 (51.2)

Men

744 (49.9)

434 (48.8)

Educational level

Higha

150 (10.1)

214 (24.0)

Middleb

227 (15.2)

230 (25.8)

Lowc

1115 (74.7)

445 (50.0)

Cardiovascular diseased

  

No

1320 (90.6)

860 (96.6)

Yes

137 (9.4)

30 (3.4)

Smoking

Never

686 (46.9)

341 (38.3)

Former

519 (35.4)

400 (44.9)

Current

259 (17.7)

149 (16.7)

Physical activity

Yese

516 (34.6)

333 (37.4)

Nof

976 (65.4)

557 (62.6)

Body mass index

(mean, SD)

27.7 (4.3)

27.4 (4.7)

  1. SD standard deviation.
  2. *Number of participants with both epigenetic measurements at baseline and follow-up information on depressive symptoms. Participants with lifetime history of depression (ESTHER) and with baseline depression (KORA) were excluded.
  3. aGeneral qualification for university entrance or higher qualification.
  4. bIntermediate secondary school-leaving certificate.
  5. cCertificate of completion of compulsory basic secondary schooling or lower.
  6. dCombined endpoint of myocardial infarction or stroke. ESTHER: lifetime history; KORA: baseline prevalence.
  7. eESTHER: ≥2 h of physical activity/week; KORA: ≥1 h of physical activity/week.
  8. fESTHER: Inactive/<2h of physical activity/week; KORA: <1 h of physical activity/week.
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