Table 1 Characteristics of participants with and without epileptiform discharges or other sharp activity

Age

0.29^†

 mean ± SD

35 ± 14

38 ± 12

 median (IQR)

32 (9.3)

38 (20)

Women, n (%)

8 (67)

40 (54)

0.62^§

Years of education^a

0.23^†

 mean ± SD

5.8 ± 3.1

4.7 ± 3.3

 median (IQR)

6.0 (3.0)

4.0 (4.0)

 Schizophrenia^b

0 (0)

5 (7.1)

1.0^‡

 Bipolar disorder^c

3 (25)

13 (18)

0.69^‡

 Depression^d

5 (42)

39 (53)

0.66^§

 Migraine^e

3 (25)

11 (15)

0.41^‡

 Traumatic brain injury^e

1 (8.3)

11 (15)

1.0^‡

 Epileptic seizures

0 (0)

3 (4.1)

1.0^‡

 Lithium

0 (0)

2 (2.7)

1.0^‡

 Anticonvulsants

8 (73)

62 (84)

0.40^‡

 Antipsychotics

4 (36)

29 (39)

1.0^‡

 Antidepressants

5 (45)

34 (46)

1.0^§

 Anxiolytics/hypnotics

3 (27)

24 (32)

1.0^‡

 None

1 (9.1)

2 (2.7)

0.34^‡

 Alcohol harmful use or dependence

0 (0)

10 (14)

0.34^‡

 Substances harmful use or dependence

0 (0)

4 (5.4)

1.0^‡

 Agoraphobia

0 (0)

3 (4.1)

1.0^‡

 Social phobia

1 (8.3)

8 (11)

1.0^‡

 Specific phobia

1 (8.3)

0 (0)

0.14^‡

 Panic disorder

3 (25)

12 (16)

0.43^‡

 Obsessive-compulsive disorder

1 (8.3)

1 (1.4)

0.26^‡

 Attention deficit hyperactivity disorder ^g

0 (0)

1 (5.9)

1.0^‡

  mean ± SD

23 ± 13

25 ± 10

0.49^†

  median (IQR)

25 (12)

25 (17)

 YMRS score

0.77^†

  mean ± SD

1.8 (2.3)

1 (2.5)

  median (IQR)

2.3 (3.0)

0.5 (4.0)