The aim of this study was to evaluate the effect of cognitive behavior therapy for self-efficacy and psychological stress.
The study subjects were gastrectomy patients with the early stage of gastric cancer, and interventions comprised of weekly counseling and journal writing. Conceptual framework of this study was based on Lazarus's Stress model (1984), and for the framework for Self-efficacy is based on the Social Learning Theory (Bandura, 1977, 1986). Three scales were employed to evaluate the effect of interventions: general self-efficacy (GSES: Sakano and Toujyou, 1986), mental stress response (SRS-18: Suzuki et al., 1997), and moods (DAMS: Fukui, 1997).
Subjects were allocated to either intervention group (IG (n=14)) or to control group (CG (n=12)) and of those twenty completed the study (9 and 11, respectively). Subjects were assessed at baseline, at the time of discharge, and 1 month after discharge.
Results:
1) Two sample t test revealed that IG had significantly lower SRS-18 total scores and SRS-18 subscale (depression-anxiety) scores than CG did at discharge. One month after discharge, depression-anxiety scores for IG remained significantly lower than that for CG (p<0.05).
2) Split Plot Design Repeated Measure ANOVA revealed that DAMS subscale scores (positive mood) for IG improved significantly from baseline to discharge (p<0.05).
3) Dunnett's test of multiple comparisons showed that IG had significantly improved moods than CG did at discharge, and the effects were sustained at 1 month after discharge (p<0.05).
4) Total General Self-Efficacy scores and any of the subscale scores between the two groups did not differ at discharge and 1 month after discharge.
In summary, interventions seemed to have contributed to the improvement of positive moods and depression-anxiety. However, interventions have failed to show any measurable impact on the general self-efficacy. Further research is necessary to confirm the findings.
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