Browsing by Author "Ferguson, Hayden"
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Item The Emotional Dance with Depression: A Longitudinal Investigation of OULA for Depression in Women(Elsevier, 2020-06) Hellem, Tracy; Sung, Young-Hoon; Ferguson, Hayden; Hildreth, LauraThe primary purpose of this pilot study was to evaluate OULA®, a dance fitness program with a strong emphasis on processing emotions through dance, as an intervention for depression in women diagnosed with major or persistent depressive disorders. 53 women were eligible for participation. Women attended OULA® for 12 weeks and then abstained from OULA® during week 13. For the primary outcome, depression severity was measured using the Hamilton Depression Rating Scale (HAM-D), and secondary outcomes were measured using the Beck Anxiety Index (BAI) and the Subjective Happiness Scale (SHS). After the abstinence week, women were offered 3-months of optional additional OULA®. HAM-D, BAI and SHS scores were collected at weeks 2, 4, 5-14 and at the end of the 3-month optional OULA® phase. Results from linear mixed effects repeated models show that during the 12-week intervention period and at week 26, HAM-D scores significantly decrease each week compared to baseline. Further, BAI scores significantly decrease starting at week 5 and through the end of the intervention period and at week 26. Moreover, SHS scores increased significantly for four of the weeks during the intervention period and at week 26. The results from this study suggest that OULA® may be a useful intervention for decreasing depression and anxiety severity in women with depression but may not be helpful for improving subjective happiness.Item Preliminary Psychometric Evaluation of the Hamilton Depression Rating Scale in Methamphetamine Dependence(2017-08) Hellem, Tracy; Scholl, Lindsay; Ferguson, Hayden; McGlade, Erin; Yurgelun-Todd, Deborah; Renshaw, Perry; Hildreth, LauraOBJECTIVE: The purpose of this study was to test the initial psychometric properties of the 17-item Hamilton Depression Rating Scale (HAM-D) in individuals with and without major depressive disorder who use methamphetamine. We used data from two completed studies and two ongoing clinical trials. The HAM-D has well established reliability and validity in a variety of populations. However, there are no published reports of reliability and validity of the HAM-D in a methamphetamine using population. METHODS: HAM-D and depression status data were extracted from four separate studies for this psychometric assessment. Using these data, we evaluated three measures of construct validity: internal consistency, contrasted groups validity and factorial validity. RESULTS: We found potential concerns with the construct validity of the HAM-D in users of methamphetamine. Intercorrelations between items were primarily less than 0.20 and the Cronbach's alpha value in this sample was 0.58 indicating potential issues with internal consistency. The results of a two sample t-tests suggest concerns with contrasted group validity, as no significant difference in average scores were found for nine items. Consistent with previous studies, a principal component analysis indicates that the HAM-D is multidimensional. CONCLUSIONS: The 17-item HAM-D might not reliably and validly measure depression severity in a methamphetamine using population. Given our small sample, additional research is needed, though, to further test the psychometric properties of the HAM-D in individuals who use methamphetamine.