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The purpose of this quasi-experimental study (two groups pretest posttest design) was to examine the effect of group problem-solving therapy on depression among older persons with chronic diseases who have received health services from two health promotion hospitals in Samutprakarn province from December 2015 to April 2016. The purposive sampling was used to select 44 older persons with mild to moderate depression, assessed by the Thai version of Patient Health Questionnaire (PHQ-9) (Lotrakul, Sumrithe, & Saipanish, 2008). The sample was divided equally into an experimental and acontrol group (22 persons in each group). The experimental group received seven sessions of group problem-solving therapy (twice a week, 60-90 minutes for each session). The control group received routine nursing care. Data were analyzed by using descriptive statistics, One-Way Repeated ANOVA,and independent t-test.
The results found that:
1. There were significant differences (p<.05) of the means of depression scores in older persons with chronic diseases in the experimental group at before and after therapy and at 1-month follow up.
2. The mean score of depression in older persons with chronic diseases in the experimental group at after therapy was lower than the control group with statistical significance (p<.05). In addition, the experimental group had greater mean differences of depression scores between at after therapy and 1- month follow up compared to the control group with statistical significance (p<.05).
The results of this study demonstrated that group problem-solving therapy can help reduce depression in older persons with chronic disease.