<![CDATA[Flood disasters may result in persistent psychological consequences, including Post-Traumatic Stress Disorder (PTSD) symptoms. The magnitude of change in PTSD symptoms following psychosocial intervention may vary between individuals, highlighting the need to identify factors associated with such changes. This study aimed to analyze changes in PTSD symptoms and factors associated with changes in PTSD scores among flood-affected respondents. A quantitative study with a one-group pretest–posttest design was conducted among 44 respondents with complete measurements. PTSD symptoms were assessed using the PCL-C before and after the intervention. Changes in PTSD scores were calculated as the difference between pretest and posttest scores. Descriptive, paired analysis, bivariate analysis, and multiple linear regression were performed. The mean PCL-C score decreased from 36.80 at pretest to 30.23 at posttest, with a mean change of 6.57 points. The proportion of respondents in the mild category increased from 36.4% to 61.4%, whereas the severe category decreased from 18.2% to 2.3%. A significant difference was observed between pretest and posttest PCL-C scores (p = 0.001). Baseline PCL-C score was significantly associated with the magnitude of change in PTSD symptoms in the multivariable model (β = 0.737; p < 0.001). Changes in PTSD symptoms varied among respondents, with baseline symptom severity being the factor most consistently associated with the magnitude of change.]]>
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