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Table 1 Characteristics1 of the participants (n = 248)

From: The epigenetic clock and objectively measured sedentary and walking behavior in older adults: the Lothian Birth Cohort 1936

Characteristics

Mean (SD), median (IQR), or number (%)

Age (years), mean (SD)

79.0 (0.45)

Female, number (%)

122 (47.1)

Percent of waking time spent sedentary, mean (SD)

62.8 (10.4)

Average no. of steps per day, median (IQR)

6509 (4945–8662)

Average no. of sit-to-stand transitions per day, median (IQR)

43.2 (35.3–51.2)

Number of chronic physical illnesses, median (IQR)

2 (1–3)

Body mass index (kg/m2), mean (SD)

27.3 (4.31)

Depression score, median (IQR)

1 (0–2)

Epigenetic clock measures (years), mean (SD)

 Extrinsic epigenetic age acceleration

3.16 (6.54)

 Intrinsic epigenetic age acceleration

1.12 (5.35)

  1. Depression score is based on the depression subscale of the Hospital Anxiety and Depression Scale; one item, “I feel as if I’m slowed up,” was excluded to avoid potential overlap with accelerometry measures
  2. 1SD standard deviation, IQR interquartile range
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Clinical Epigenetics

ISSN: 1868-7083

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