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. 2023 Dec 1;13:372. doi: 10.1038/s41398-023-02675-0

Table 1.

Demographic and clinical characteristics of the matched sample.

Variables Suicidal ideation Suicide plan Suicide attempt
No(N = 280) Yes(N = 280) Statistics No(N = 273) Yes(N = 273) Statistics No(N = 275) Yes(N = 275) Statistics
N
(%)
N
(%)
X2 df p value N
(%)
N
(%)
X2 df p value N
(%)
N
(%)
X2 df p value
Male gender 95 (33.9) 95 (33.9) 0.00 1 1.00

91

(33.3)

90

(33.0)

0.01 1 0.93

97

(35.0)

92

(33.5)

0.26 1 0.61
Occupation 255 (91.1) 257 (91.8) 0.09 1 0.76

253

(92.7)

253

(92.7)

0.00 1 1.00

254

(91.7)

254

(92.4)

0.18 1 0.67
Urban 224 (80.0) 216 (77.1) 0.68 1 0.41

218

(79.9)

215

(78.8)

0.10 1 0.75

221

(79.8)

215

(78.8)

0.09 1 0.77
Medical insurance 200 (71.4) 192 (68.6) 0.54 1 0.46

197

(72.2)

189

(69.2)

0.57 1 0.45

201

(72.6)

191

(69.5)

0.74 1 0.39
Unmarried 152 (54.3) 150 (53.6) 0.03 1 0.87

152

(55.7)

151

(55.3)

0.01 1 0.93

155

(56.0)

151

(54.9)

0.02 1 0.88
Family history

72

(25.7)

69

(24.6)

0.09 1 0.77

67

(24.5)

66

(24.2)

0.01 1 0.92

67

(24.2)

67

(24.2)

0.00 1 1.00
Good health status 221 (78.9) 214 (76.4) 0.51 1 0.78

212

(77.7)

210 (76.9) 0.10 1 0.95

215

(77.6)

211

(76.7)

0.11 1 0.95
Poor relationship with friends/family members 118 (42.1)

130

(46.4)

1.04 1 0.31

114

(41.8)

125 (45.8) 0.90 1 0.34

118

(42.6)

126

(45.8)

0.57 1 0.45
Irritability personal characteristics 174 (62.1)

223

(79.6)

20.78 1 <0.001

167

(61.2)

216 (79.1) 21.00 1 <0.001

170

(61.4)

218

(79.3)

20.70 1 <0.001
Poor family support

68

(24.3)

61

(21.8)

0.49 1 0.48

66

(24.2)

57

(20.9)

0.85 1 0.36

69

(24.9)

58

(21.1)

1.27 1 0.26
Stress event

33

(11.8)

67

(23.9)

14.07 1 <0.001

34

(12.5)

63

(23.1)

10.54 1 0.001

33

(11.9)

63

(22.9)

11.89 1 0.001
Less interpersonal communication 170 (60.7) 217 (77.5) 18.48 1 <0.001

166

(60.8)

213 (78.0) 19.06 1 <0.001

169

(61.0)

214

(77.8)

18.75 1 <0.001
Mean (SD) Mean (SD) t/z df p value Mean (SD) Mean (SD) t/z df p value Mean (SD) Mean (SD) t/z df p value
Age (years) 35.35 (17.44) 34.44 (18.83) −1.44 a 0.15 35.70 (17.60) 34.00 (18.87) −2.05 a 0.04

35.82

(17.58)

34.12 (18.91) −2.03 a 0.04
Education background (years) 13.18 (3.57) 12.50 (3.79) 2.18 558 0.03 13.21 (3.65) 12.42 (3.75) 2.49 544 0.01

13.19

(3.64)

12.45

(3.76)

2.34 548 0.02
Illness duration (years) 7.34 (8.68) 5.73 (7.60) −2.47 a 0.01

7.48

(8.90)

5.83

(7.66)

−2.03 a 0.02

7.52

(8.97)

5.79

(7.65)

−2.37 a 0.02
First episode age (years) 28.23 (15.15) 28.69 (17.19) −0.99 a 0.32 28.56 (15.17) 28.15 (17.09) −1.76 a 0.08

28.63

(15.16)

28.31

(17.19)

−1.70 a 0.09
CRP (μg/L)

0.57

(1.88)

0.59 (1.34) −0.37 a 0.71

0.58

(1.92)

0.59 (1.36) −0.06 a 0.95

0.59

(1.93)

0.59

(1.35)

−0.20 a 0.84
Cortisone (nmol/L) 16.06 (8.78)

15.61

(9.14)

−0.58 a 0.56 16.38 (8.78) 15.29 (9.27) −1.48 a 0.14

16.25

(8.70)

15.31

(9.25)

−1.28 a 0.20
ACTH (pg/ml) 32.11 (30.19)

27.81

(25.03)

−1.17 a 0.24 32.81 (30.12) 27.49 (25.14) −1.78 a 0.08 32.48 (29.82)

27.61

(25.17)

−1.66 a 0.10
Testosterone (nmol/L) 166.20 (210.96) 146.53 (195.50) −1.14 a 0.25 166.40 (212.83) 142.91 (193.83) −1.37 a 0.17

170.84

(216.68)

143.65

(193.39)

−1.46 a 0.14
HAMD-24 total 9.06 (7.92) 23.32 (10.03) −18.67 a <0.001

9.21

(8.29)

23.10 (9.98) −14.86 a <0.001

9.31

(8.33)

23.05

(9.96)

−14.80 a <0.001
HAMA total 5.13 (6.92) 12.82 (8.59) −12.12 a <0.001

5.42

(6.87)

12.55 (8.44) −11.36 a <0.001

5.42

(6.82)

12.54

(8.41)

−11.43 a <0.001
BPRS total 32.13 (11.30) 31.69 (9.37) 0.51 558 0.61 32.26 (11.45) 31.40 (9.31) 0.97 544 0.33

32.34

(11.25)

31.40 (9.28) 1.07 548 0.29
YMRS

16.67

(11.78)

6.96

(7.52)

−9.75 a <0.001

16.51

(11.73)

6.67

(7.31)

−9.93 a <0.001

16.75

(11.64)

6.68

(7.31)

−10.27 a <0.001

Bolded value: <0.05.

CRP C-reactive protein, ACTH adreno-cortico-tropic-hormone, HAMD Hamilton Depression Rating Scale, HAMA Hamilton Anxiety Rating Scale, YMRS Young Manic Rating Scale, BPRS The Brief Psychiatric Rating Scale.