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Table 1 Demographic characteristics of patients with BD, patients with SZ, and HCs.

From: Mitochondrial genetic variants associated with bipolar disorder and Schizophrenia in a Japanese population

 

HCs

BD

SZ

  

Variables

(n = 197)

(n = 51)

(n = 172)

P values (F or χ2)

post hoc

Age (years)

35.6 ± 13.8

54.5 ± 16.8

45.3 ± 14.0

6.79 × 10 − 18 (43.5)

HCs < SZ < BD

Sex (male/female)

129/68

23/28

77/95

1.25 × 10 − 4 (18.0)

-

Education (years)

16.2 ± 2.4

13.5 ± 3.0

12.5 ± 2.2

7.60 × 10 − 41 (116.2)

HCs > BD > SZ

Estimated premorbid IQ

108.9 ± 7.4

100.8 ± 11.3

98.2 ± 11.0

7.29 × 10 − 22 (55.3)

HCs > BD,SZ

IMI-eq (mg/day)

-

45.9 ± 99.2

4.9 ± 27.0

2.06 × 10 − 6 (23.8)

-

DZ-eq (mg/day)

-

6.1 ± 10.4

6.2 ± 11.3

0.96 (< 0.1)

-

CPZ-eq (mg/day)

-

152.9 ± 213.3

523.3 ± 511.4

9.80 × 10 − 7 (27.7)

-

BPD-eq (mg/day)

-

0.1 ± 0.6

0.8 ± 2.3

0.045 (4.1)

-

Age at onset (years)

-

37.0 ± 16.2

27.0 ± 11.0

9.19 × 10 − 7 (25.5)

-

DOI (years)

-

17.5 ± 14.1

18.1 ± 12.7

0.76 (0.1)

-

HAMD-17

-

8.5 ± 5.9

-

-

-

YMRS

-

1.7 ± 4.5

-

-

-

PANSS positive symptoms

-

-

16.5 ± 6.2

-

-

PANSS negative symptoms

-

-

19.4 ± 7.0

-

-

  1. HCs, healthy controls; BD, bipolar disorder; SZ, schizophrenia; IQ, intelligence quotient; IMI-eq, imipramine equivalents of total antidepressants; DZ-eq, diazepam equivalents; CPZ-eq, total antipsychotic dosage in chlorpromazine equivalents; BPD-eq, biperiden equivalents of total antiparkinsonian drugs; DOI, duration of illness; HAMD-17, 17-item Hamilton Rating Scale for Depression; YMRS, Young Mania Rating Scale; PANSS, Positive and Negative Syndrome Scale. Complete demographic information was not obtained for all subjects (number of participants for which the estimated premorbid IQ was available: HCs, n = 177; BD, n = 46; SZ, n = 168; number of participants for which the HAMD-17 was available: BD, n = 47). Means ± SDs are shown. P values < 0.05 are shown in boldface, and post hoc analysis was performed