Journal List > Korean J Schizophr Res > v.16(2) > 1057795

Yoon, Song, Kang, and An: Relations of Self-Esteem with Paranoia in Healthy Controls, Individuals at Ultra-High Risk for Psychosis and with Recent Onset Schizophrenia

Abstract

Objectives

Some emotional components, such as self-esteem, depression and anxiety, have been reported to be associated with paranoia in non-clinical population and schizophrenia patients. The aim of this study was to investigate the correlation between self-esteem and paranoia in healthy controls, in ultra-high risk for psychosis and schizophrenia patients.

Methods

34 subjects with recent onset schizophrenia, 36 subjects with ultra-high risk for psychosis, and 44 healthy volunteers participated in this study. A detailed assessment was made of the paranoia, self-esteem, depression, and anxiety.

Results

In all three groups, there were a negative correlation between paranoia and self-esteem, and positive correlations between paranoia and depression and anxiety. In healthy control, lower self-esteem showed a trend to predict higher paranoia, and in ultra-high risk for psychosis, this trend tern on statistically significant level, and in recent onset schizophrenia group, this correlation was disappeared.

Conclusion

The individual who have lower self-esteem showed higher paranoia tendency under delusional level, but after formation of persecutory delusion, the tendency was disappeared. This result supports the hypothesis that persecutory delusions are a defense against negative affective process.

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Table 1.
Demographic and clinical profiles of normal control, UHR for psychosis, and early schizophrenia patients
Normal control (n=44) UHR for psychosis (n=36) Early schizophrenia (n=34)
Age (years) 20.7 (1.5) 20.4 (1.4) 20.6 (1.9)
Education (years) 13.8 (1.1) 13.3 (1.4) 13.2 (1.5)
Sex (F/M) 19/25 (12/24) 15/19
Rosenberg's self-esteem scaleabc 31.5 (4.6) 21.5 (5.9) 26.4 (5.6)
Beck depression inventoryabc 05.2 (4.8) 24.0 (12.5) 15.5 (13.2)
Paranoia scaleabc 18.7 (8.4) 39 (18.1) 29.4 (16.9)
Suspiciousness/persecution item of PANSSac 01.1 (0.26) 02.9 (1.0) 03.4 (1.3)
Positive symptoms (PANSS)abc 07.2 (0.7) 13.9 (3.6) 16.1 (5.2)
Negative symptoms (PANSS)ac 07.2 (0.6) 17.6 (5.6) 19.0 (7.3)
General psychopathology (PANSS)ac 16.4 (0.8) 33.1 (7.6) 32.2 (8.3)
Antipsychotic medications (naïve/medicated) 26/10 1/33
Chlorpromazine equivalent dose (mg/d)b 48.3 (86.8) 459 (327.4)
State Anxiety Inventoryabc 36.7 (8.6) 59.1 (15.1) 52.0 (14.6)

Chlorpromazine equivalent dose was derived from Kroken et al. 25)

a : significant difference between normal controls and UHR for psychosis (p<0.05)

b : significant difference between UHR for psychosis and early schizophrenia patients (p<0.05)

c : significant difference between normal controls and early schizophrenia patients (p<0.05)

Table 2.
Intercorrelation between paranoia scale and other variables
Normal controls 1 2 3 4 5 6
1. Paranoia scale 1
2. SE -0.415∗∗ -1
3. BDI -0.418∗∗ -0.601∗∗ 1
4. SAI -0.22 -0.633∗∗ 0.566∗∗ 1
5. PANSS P6 -0.096 -0.09 0.121 0.198 1
6. PANSS positive -0.124 -0.001 0.135 0.093 0.811∗∗ 1
UHR for psychosis -1 -2 3 4 5 6
1. Paranoia scale -1
2. SE -0.696∗∗ -1
3. BDI -0.617∗∗ -0.506∗∗ 1
4. SAI -0.656∗∗ -0.528∗∗ 0.751∗∗ 1
5. PANSS P6 -0.312 -0.242 0.248 0.348 1
6. PANSS positive -0.322 -0.266 0.177 0.201 0.722∗∗ 1
Early schizophrenia -1 -2 3 4 5 6
1. Paranoia scale -1
2. SE -0.468∗∗ -1
3. BDI -0.607∗∗ -0.523∗∗ 1
4. SAI -0.669∗∗ -0.501∗∗ 0.802∗∗ 1
5. PANSS P6 -0.357 -0.311 0.182 0.21 1
6. PANSS positive -0.3612 -0.251 0.186 0.211 0.867∗∗ 1

: correlation is significant at the 0.05 level,

∗∗ : correlation is significant at the 0.01 level. SE : Rosenberg's self-esteem scale, BDI : beck depression inventory, SAI : State-Trait Anxiety Inventory, PANSS P6 : suspiciousness/persecution item of PANSS, PANSS positive : positive scale of PANSS

Table 3.
Multiple linear regression analysis of paranoia scale score with other variables
Normal control
β t-value p-value Partial correlation VIF
Age -0.004 -0.026 <0.98 -0.004 1.08
Sex -0.133 -0.950 <0.348 -0.152 1.00
SE -0.334 -1.699 <0.097 -0.266 1.95
BDI -0.309 -1.679 <0.101 -0.263 1.72
SAI -0.171 -0.877 <0.386 -0.141 1.93
R -R2 -dR2 <F change df1 df2 Sig. F change
0.5 -0.25 -0.250 <2.535 .85 38 0.045
UHR for psychosis
β t-value p-value Partial correlation VIF
Age -0.163 -1.545 <0.133 -0.272 1.04
Sex -0.236 -2.044 <0.050 -0.350 1.25
SE -0.578 -4.209 <0.001 -0.436 1.76
BDI -0.119 -0.736 <0.468 -0.076 2.43
SAI -0.267 -1.637 <0.112 -0.170 2.47
R -R2 -dR2 <F change df1 df2 Sig. F change
0.824 -0.678 -0.678 012.653 -5 30 0.00
Recent onset schizophrenia
β t-value p-value Partial correlation VIF
Age -0.037 -0.269 <0.79 -0.051 1.16
Sex -0.242 -1.790 <0.084 -0.32 1.11
SE -0.159 -1.027 <0.313 -0.19 1.47
BDI -0.173 -0.761 <0.453 -0.142 3.17
SAI -0.469 -2.145 <0.041 -0.376 2.92
R -R2 -dR2 <F change df1 df2 Sig. F change
0.736 -0.542 -0.542 <6.617 -5 28 0.00

SE : Rosenberg's self-esteem scale, BDI : beck depression inventory, SAI : state anxiety inventory

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