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Rasch analysis of the Fatigue Severity Scale in Italian subjects with multiple sclerosis
To perform a psychometric analysis of the Fatigue Severity Scale (FSS) using Rasch analysis in a sample of Italian subjects with multiple sclerosis. The 9-item FSS was administered to 156 Italian-speaking subjects with multiple sclerosis. Responses were assessed using Cronbach's alpha, item-rem...
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| Published in: | Journal of rehabilitation medicine 2016-07, Vol.48 (7), p.597-603 |
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| container_title | Journal of rehabilitation medicine |
| container_volume | 48 |
| creator | Ottonello, Marcella Pellicciari, Leonardo Giordano, Andrea Foti, Calogero |
| description | To perform a psychometric analysis of the Fatigue Severity Scale (FSS) using Rasch analysis in a sample of Italian subjects with multiple sclerosis.
The 9-item FSS was administered to 156 Italian-speaking subjects with multiple sclerosis. Responses were assessed using Cronbach's alpha, item-remainder correlations, factor analysis and Rasch analysis.
The FSS showed good internal consistency (Cronbach's alpha = 0.95), but presented problems in the rating categories and failed to fit the Rasch model. After re-coding and deletion of item 1 (infit mean-square (MnSq) = 1.65; outfit MnSq = 1.72), the 8-item version fitted the latent construct that the scale was intended to measure and showed satisfactory reliability indices. The scale was not optimally targeted to the sample, but no sex or age bias was found.
The 8-item FSS shows better psychometric properties than the 9-item version. However, a significant ceiling effect emerged in our sample of Italian adults with multiple sclerosis and, consequently, there is a targeting problem for patients with low-level disability. To consider this a valid tool for use in clinical practice and research, further studies with a larger sample of subjects with multiple sclerosis are needed. |
| doi_str_mv | 10.2340/16501977-2116 |
| format | article |
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The 9-item FSS was administered to 156 Italian-speaking subjects with multiple sclerosis. Responses were assessed using Cronbach's alpha, item-remainder correlations, factor analysis and Rasch analysis.
The FSS showed good internal consistency (Cronbach's alpha = 0.95), but presented problems in the rating categories and failed to fit the Rasch model. After re-coding and deletion of item 1 (infit mean-square (MnSq) = 1.65; outfit MnSq = 1.72), the 8-item version fitted the latent construct that the scale was intended to measure and showed satisfactory reliability indices. The scale was not optimally targeted to the sample, but no sex or age bias was found.
The 8-item FSS shows better psychometric properties than the 9-item version. However, a significant ceiling effect emerged in our sample of Italian adults with multiple sclerosis and, consequently, there is a targeting problem for patients with low-level disability. To consider this a valid tool for use in clinical practice and research, further studies with a larger sample of subjects with multiple sclerosis are needed.</description><identifier>ISSN: 1650-1977</identifier><identifier>EISSN: 1651-2081</identifier><identifier>DOI: 10.2340/16501977-2116</identifier><identifier>PMID: 27344968</identifier><language>eng</language><publisher>Sweden: Journal of Rehabilitation Medicine</publisher><subject>Adult ; Analysis ; Bias ; Clinical research ; Cronbach's alpha ; Disability ; Factor analysis ; Factor Analysis, Statistical ; Fatigue ; Fatigue - etiology ; Fatigue - psychology ; Female ; Humans ; Italy ; Male ; Middle Aged ; Multiple sclerosis ; Multiple Sclerosis - complications ; Multiple Sclerosis - psychology ; Psychiatric Status Rating Scales - standards ; Psychometrics ; Quantitative psychology ; Rasch model ; Reliability ; Reproducibility of Results ; Severity ; Severity of Illness Index</subject><ispartof>Journal of rehabilitation medicine, 2016-07, Vol.48 (7), p.597-603</ispartof><rights>Copyright Taylor & Francis Ltd. Jul 2016</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c360t-39eb600a4fa81e68f345c239f5aad8c726cda833f5f19c3cb5e38a84df2a6c883</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925,30999</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/27344968$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Ottonello, Marcella</creatorcontrib><creatorcontrib>Pellicciari, Leonardo</creatorcontrib><creatorcontrib>Giordano, Andrea</creatorcontrib><creatorcontrib>Foti, Calogero</creatorcontrib><title>Rasch analysis of the Fatigue Severity Scale in Italian subjects with multiple sclerosis</title><title>Journal of rehabilitation medicine</title><addtitle>J Rehabil Med</addtitle><description>To perform a psychometric analysis of the Fatigue Severity Scale (FSS) using Rasch analysis in a sample of Italian subjects with multiple sclerosis.
The 9-item FSS was administered to 156 Italian-speaking subjects with multiple sclerosis. Responses were assessed using Cronbach's alpha, item-remainder correlations, factor analysis and Rasch analysis.
The FSS showed good internal consistency (Cronbach's alpha = 0.95), but presented problems in the rating categories and failed to fit the Rasch model. After re-coding and deletion of item 1 (infit mean-square (MnSq) = 1.65; outfit MnSq = 1.72), the 8-item version fitted the latent construct that the scale was intended to measure and showed satisfactory reliability indices. The scale was not optimally targeted to the sample, but no sex or age bias was found.
The 8-item FSS shows better psychometric properties than the 9-item version. However, a significant ceiling effect emerged in our sample of Italian adults with multiple sclerosis and, consequently, there is a targeting problem for patients with low-level disability. To consider this a valid tool for use in clinical practice and research, further studies with a larger sample of subjects with multiple sclerosis are needed.</description><subject>Adult</subject><subject>Analysis</subject><subject>Bias</subject><subject>Clinical research</subject><subject>Cronbach's alpha</subject><subject>Disability</subject><subject>Factor analysis</subject><subject>Factor Analysis, Statistical</subject><subject>Fatigue</subject><subject>Fatigue - etiology</subject><subject>Fatigue - psychology</subject><subject>Female</subject><subject>Humans</subject><subject>Italy</subject><subject>Male</subject><subject>Middle Aged</subject><subject>Multiple sclerosis</subject><subject>Multiple Sclerosis - complications</subject><subject>Multiple Sclerosis - psychology</subject><subject>Psychiatric Status Rating Scales - standards</subject><subject>Psychometrics</subject><subject>Quantitative psychology</subject><subject>Rasch model</subject><subject>Reliability</subject><subject>Reproducibility of Results</subject><subject>Severity</subject><subject>Severity of Illness Index</subject><issn>1650-1977</issn><issn>1651-2081</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><sourceid>7QJ</sourceid><recordid>eNpdkM9LwzAUx4Mobk6PXiXgxUs1aZo0PcpwOhgITsFbeU0Tl9Efs0mV_fembvPg6b3H-_CF7wehS0puY5aQOyo4oVmaRjGl4giNw02jmEh6_LuTaHiO0Jlza0Joyll6ikZxypIkE3KM3l_AqRWGBqqtsw63BvuVxjPw9qPXeKm_dGf9Fi8VVBrbBs89VBYa7PpirZV3-Nv6Fa77yttNIJyqdNeGpHN0YqBy-mI_J-ht9vA6fYoWz4_z6f0iUkwQH7FMF4IQSAxIqoU0LOEqZpnhAKVUaSxUCZIxww3NFFMF10yCTEoTg1BSsgm62eVuuvaz187ntXVKVxU0uu1dTiXhiWSSJAG9_oeu274LzQdKMi5Yymmgoh2lQg_XaZNvOltDt80pyQfl-UF5PigP_NU-tS9qXf7RB8fsB-1tezE</recordid><startdate>20160701</startdate><enddate>20160701</enddate><creator>Ottonello, Marcella</creator><creator>Pellicciari, Leonardo</creator><creator>Giordano, Andrea</creator><creator>Foti, Calogero</creator><general>Journal of Rehabilitation Medicine</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QJ</scope><scope>NAPCQ</scope><scope>7X8</scope></search><sort><creationdate>20160701</creationdate><title>Rasch analysis of the Fatigue Severity Scale in Italian subjects with multiple sclerosis</title><author>Ottonello, Marcella ; Pellicciari, Leonardo ; Giordano, Andrea ; Foti, Calogero</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c360t-39eb600a4fa81e68f345c239f5aad8c726cda833f5f19c3cb5e38a84df2a6c883</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2016</creationdate><topic>Adult</topic><topic>Analysis</topic><topic>Bias</topic><topic>Clinical research</topic><topic>Cronbach's alpha</topic><topic>Disability</topic><topic>Factor analysis</topic><topic>Factor Analysis, Statistical</topic><topic>Fatigue</topic><topic>Fatigue - etiology</topic><topic>Fatigue - psychology</topic><topic>Female</topic><topic>Humans</topic><topic>Italy</topic><topic>Male</topic><topic>Middle Aged</topic><topic>Multiple sclerosis</topic><topic>Multiple Sclerosis - complications</topic><topic>Multiple Sclerosis - psychology</topic><topic>Psychiatric Status Rating Scales - standards</topic><topic>Psychometrics</topic><topic>Quantitative psychology</topic><topic>Rasch model</topic><topic>Reliability</topic><topic>Reproducibility of Results</topic><topic>Severity</topic><topic>Severity of Illness Index</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Ottonello, Marcella</creatorcontrib><creatorcontrib>Pellicciari, Leonardo</creatorcontrib><creatorcontrib>Giordano, Andrea</creatorcontrib><creatorcontrib>Foti, Calogero</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Applied Social Sciences Index & Abstracts (ASSIA)</collection><collection>Nursing & Allied Health Premium</collection><collection>MEDLINE - Academic</collection><jtitle>Journal of rehabilitation medicine</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Ottonello, Marcella</au><au>Pellicciari, Leonardo</au><au>Giordano, Andrea</au><au>Foti, Calogero</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Rasch analysis of the Fatigue Severity Scale in Italian subjects with multiple sclerosis</atitle><jtitle>Journal of rehabilitation medicine</jtitle><addtitle>J Rehabil Med</addtitle><date>2016-07-01</date><risdate>2016</risdate><volume>48</volume><issue>7</issue><spage>597</spage><epage>603</epage><pages>597-603</pages><issn>1650-1977</issn><eissn>1651-2081</eissn><abstract>To perform a psychometric analysis of the Fatigue Severity Scale (FSS) using Rasch analysis in a sample of Italian subjects with multiple sclerosis.
The 9-item FSS was administered to 156 Italian-speaking subjects with multiple sclerosis. Responses were assessed using Cronbach's alpha, item-remainder correlations, factor analysis and Rasch analysis.
The FSS showed good internal consistency (Cronbach's alpha = 0.95), but presented problems in the rating categories and failed to fit the Rasch model. After re-coding and deletion of item 1 (infit mean-square (MnSq) = 1.65; outfit MnSq = 1.72), the 8-item version fitted the latent construct that the scale was intended to measure and showed satisfactory reliability indices. The scale was not optimally targeted to the sample, but no sex or age bias was found.
The 8-item FSS shows better psychometric properties than the 9-item version. However, a significant ceiling effect emerged in our sample of Italian adults with multiple sclerosis and, consequently, there is a targeting problem for patients with low-level disability. To consider this a valid tool for use in clinical practice and research, further studies with a larger sample of subjects with multiple sclerosis are needed.</abstract><cop>Sweden</cop><pub>Journal of Rehabilitation Medicine</pub><pmid>27344968</pmid><doi>10.2340/16501977-2116</doi><tpages>7</tpages><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 1650-1977 |
| ispartof | Journal of rehabilitation medicine, 2016-07, Vol.48 (7), p.597-603 |
| issn | 1650-1977 1651-2081 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_1805483804 |
| source | Applied Social Sciences Index & Abstracts (ASSIA); Alma/SFX Local Collection |
| subjects | Adult Analysis Bias Clinical research Cronbach's alpha Disability Factor analysis Factor Analysis, Statistical Fatigue Fatigue - etiology Fatigue - psychology Female Humans Italy Male Middle Aged Multiple sclerosis Multiple Sclerosis - complications Multiple Sclerosis - psychology Psychiatric Status Rating Scales - standards Psychometrics Quantitative psychology Rasch model Reliability Reproducibility of Results Severity Severity of Illness Index |
| title | Rasch analysis of the Fatigue Severity Scale in Italian subjects with multiple sclerosis |
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