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Table 1 Socio‑demographic and clinical characteristics of the sample (N = 64)

From: Methylomic biomarkers of lithium response in bipolar disorder: a clinical utility study

 

PaR + GR n = 44

NR N = 20

p*

N (%) or median (IQR)

N (%) or median (IQR)

Socio-demographics

 Age at inclusion

42 (32–50)

43 (32–49)

0.91

 Sex (females)

24 (54%)

11 (55%)

0.97

Family history

 First-degrees relatives with BD

21 (48%)

5 (25%)

0.09

Mode of onset

 Age at BD onset

23 (18–31)

25 (18–32)

0.83

 Psychotic symptoms at onset

11 (25%)

7 (35%)

0.41

 Manic polarity at onset

22 (50%)

5 (25%)

0.06

BD Course

 Rapid cycling

6 (14%)

1 (5%)

0.42

 Duration of the illness

16 (9–24)

14 (8–20)

0.45

 Lifetime number of episodes

8 (5–10)

8.5 (5–11)

0.49

 Lifetime number of hospitalizations

4 (2–6)

4 (3–7)

0.26

 Lithium as first prescribed stabilizer

27 (61%)

10 (50%)

0.42

Comorbidities

 Current tobacco use

26 (59%)

12 (60%)

0.94

 Lifetime alcohol misuse

9 (20%)

4 (20%)

0.62

 Lifetime cannabis misuse

4 (9%)

5 (25%)

0.09

 Lifetime panic disorders

6 (14%)

4 (20%)

0.54

  1. *Chi-square or Exact Fisher or Mann–Whitney tests when appropriate