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A test of the psychometric properties of the cancer locus of control scale in Greek patients with advanced cancer
Objective The study aimed to assess the psychometric properties of the Cancer Locus of Control (CLOC) scale on a Greek sample of advanced cancer patients. Methods The scale was translated with the forward–backward procedure to Greek. The CLOC scale was administered to 140 advanced cancer patients. I...
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| Published in: | Psycho-oncology (Chichester, England) England), 2012-11, Vol.21 (11), p.1215-1221 |
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| container_title | Psycho-oncology (Chichester, England) |
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| creator | Mystakidou, Kyriaki Tsilika, Eleni Parpa, Efi Panagiotou, Irene Galanos, Antonis Gouliamos, Athanasios Watson, Maggie |
| description | Objective
The study aimed to assess the psychometric properties of the Cancer Locus of Control (CLOC) scale on a Greek sample of advanced cancer patients.
Methods
The scale was translated with the forward–backward procedure to Greek. The CLOC scale was administered to 140 advanced cancer patients. It was administered twice, with a 3‐day interval, to 100 (of the 140) eligible patients with advanced cancer. Together with the CLOC scale, the patients also completed the Greek Mental Adjustment to Cancer (G‐MAC) scale. Confirmatory factor analysis was carried out using the AMOS 7.0 analysis. The reliability was assessed by the internal consistency (Cronbach's α coefficients), test–retest (Spearman's r value) of the instrument, and inter‐item correlations. Construct validity was assessed using the G‐MAC scale, interscale correlations, item–scale correlations, and scales–total correlations.
Results
The homogeneity of the subscales proved to be satisfactory (α coefficient ranged from 0.713 to 0.786). Overall test–retest reliability was satisfactory at p |
| doi_str_mv | 10.1002/pon.2014 |
| format | article |
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The study aimed to assess the psychometric properties of the Cancer Locus of Control (CLOC) scale on a Greek sample of advanced cancer patients.
Methods
The scale was translated with the forward–backward procedure to Greek. The CLOC scale was administered to 140 advanced cancer patients. It was administered twice, with a 3‐day interval, to 100 (of the 140) eligible patients with advanced cancer. Together with the CLOC scale, the patients also completed the Greek Mental Adjustment to Cancer (G‐MAC) scale. Confirmatory factor analysis was carried out using the AMOS 7.0 analysis. The reliability was assessed by the internal consistency (Cronbach's α coefficients), test–retest (Spearman's r value) of the instrument, and inter‐item correlations. Construct validity was assessed using the G‐MAC scale, interscale correlations, item–scale correlations, and scales–total correlations.
Results
The homogeneity of the subscales proved to be satisfactory (α coefficient ranged from 0.713 to 0.786). Overall test–retest reliability was satisfactory at p < 0.0005. Construct validity has shown moderate correlations with G‐MAC p < 0.0005. Interscale and inter‐item correlations were satisfactory at p < 0.05.
Conclusions
The results suggest that the Greek version of CLOC administered in cancer patients treated in a palliative care unit is a reliable and valid clinical instrument. Copyright © 2011 John Wiley & Sons, Ltd.</description><identifier>ISSN: 1057-9249</identifier><identifier>EISSN: 1099-1611</identifier><identifier>DOI: 10.1002/pon.2014</identifier><identifier>PMID: 21726016</identifier><identifier>CODEN: POJCEE</identifier><language>eng</language><publisher>Chichester, UK: John Wiley & Sons, Ltd</publisher><subject>Adaptation, Psychological ; adjustment ; Adult ; Aged ; Aged, 80 and over ; Cancer ; Construct validity ; Correlation analysis ; Discriminant analysis ; Factor Analysis, Statistical ; Female ; Greece ; Humans ; Internal-External Control ; Locus of control ; Male ; Middle Aged ; Neoplasm Staging ; Neoplasms - psychology ; Oncology ; palliative ; Palliative Care ; Psychometric properties ; Psychometrics - methods ; Quantitative psychology ; Reproducibility of Results ; Severity of Illness Index ; Surveys and Questionnaires ; Terminally ill people ; Translating</subject><ispartof>Psycho-oncology (Chichester, England), 2012-11, Vol.21 (11), p.1215-1221</ispartof><rights>Copyright © 2011 John Wiley & Sons, Ltd.</rights><rights>Copyright John Wiley and Sons, Limited Nov 2012</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c4864-e4f71b494475a8358d7af302f3a598b3534a4a30399e4f1f900d660864d62fe43</citedby><cites>FETCH-LOGICAL-c4864-e4f71b494475a8358d7af302f3a598b3534a4a30399e4f1f900d660864d62fe43</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925,30999,31000</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/21726016$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Mystakidou, Kyriaki</creatorcontrib><creatorcontrib>Tsilika, Eleni</creatorcontrib><creatorcontrib>Parpa, Efi</creatorcontrib><creatorcontrib>Panagiotou, Irene</creatorcontrib><creatorcontrib>Galanos, Antonis</creatorcontrib><creatorcontrib>Gouliamos, Athanasios</creatorcontrib><creatorcontrib>Watson, Maggie</creatorcontrib><title>A test of the psychometric properties of the cancer locus of control scale in Greek patients with advanced cancer</title><title>Psycho-oncology (Chichester, England)</title><addtitle>Psycho-Oncology</addtitle><description>Objective
The study aimed to assess the psychometric properties of the Cancer Locus of Control (CLOC) scale on a Greek sample of advanced cancer patients.
Methods
The scale was translated with the forward–backward procedure to Greek. The CLOC scale was administered to 140 advanced cancer patients. It was administered twice, with a 3‐day interval, to 100 (of the 140) eligible patients with advanced cancer. Together with the CLOC scale, the patients also completed the Greek Mental Adjustment to Cancer (G‐MAC) scale. Confirmatory factor analysis was carried out using the AMOS 7.0 analysis. The reliability was assessed by the internal consistency (Cronbach's α coefficients), test–retest (Spearman's r value) of the instrument, and inter‐item correlations. Construct validity was assessed using the G‐MAC scale, interscale correlations, item–scale correlations, and scales–total correlations.
Results
The homogeneity of the subscales proved to be satisfactory (α coefficient ranged from 0.713 to 0.786). Overall test–retest reliability was satisfactory at p < 0.0005. Construct validity has shown moderate correlations with G‐MAC p < 0.0005. Interscale and inter‐item correlations were satisfactory at p < 0.05.
Conclusions
The results suggest that the Greek version of CLOC administered in cancer patients treated in a palliative care unit is a reliable and valid clinical instrument. Copyright © 2011 John Wiley & Sons, Ltd.</description><subject>Adaptation, Psychological</subject><subject>adjustment</subject><subject>Adult</subject><subject>Aged</subject><subject>Aged, 80 and over</subject><subject>Cancer</subject><subject>Construct validity</subject><subject>Correlation analysis</subject><subject>Discriminant analysis</subject><subject>Factor Analysis, Statistical</subject><subject>Female</subject><subject>Greece</subject><subject>Humans</subject><subject>Internal-External Control</subject><subject>Locus of control</subject><subject>Male</subject><subject>Middle Aged</subject><subject>Neoplasm Staging</subject><subject>Neoplasms - psychology</subject><subject>Oncology</subject><subject>palliative</subject><subject>Palliative Care</subject><subject>Psychometric properties</subject><subject>Psychometrics - methods</subject><subject>Quantitative psychology</subject><subject>Reproducibility of Results</subject><subject>Severity of Illness Index</subject><subject>Surveys and Questionnaires</subject><subject>Terminally ill people</subject><subject>Translating</subject><issn>1057-9249</issn><issn>1099-1611</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><sourceid>7QJ</sourceid><recordid>eNqFkl1rFDEUhoMotlbBXyABb7yZmuTkY3JZSrsKayui7GXIZjLstLOTaZKx7r83a6cVBNmrhOR5H3JODkJvKTmlhLCPYxhOGaH8GTqmROuKSkqf7_dCVZpxfYRepXRDSIG1fImOGFVMEiqP0d0Zzj5lHFqcNx6Paec2Yetz7BweYxh9zJ1Pj9fODs5H3Ac3_TlzYcgx9Dg523vcDXgRvb_Foy2hISd83-UNts3PfayZ06_Ri9b2yb-Z1xP04_Li-_mnanm9-Hx-tqwcryWvPG8VXXPNuRK2BlE3yrZAWAtW6HoNArjlFghoXVDaakIaKUmJNpK1nsMJ-vDgLWXcTaVGs-2S831vBx-mZKgqCqGUFIdRzgG05IoeRqG0WygC7DDKalBQayEL-v4f9CZMcSjtMZRyrcsbBfwVuhhSir41Y-y2Nu4MJWY_B6bMgdnPQUHfzcJpvfXNE_j48QWoHoD7rve7_4rM1-urWTjzXcr-1xNv462RCpQwq6uF-XK5Wi5W-psB-A3Z2chS</recordid><startdate>201211</startdate><enddate>201211</enddate><creator>Mystakidou, Kyriaki</creator><creator>Tsilika, Eleni</creator><creator>Parpa, Efi</creator><creator>Panagiotou, Irene</creator><creator>Galanos, Antonis</creator><creator>Gouliamos, Athanasios</creator><creator>Watson, Maggie</creator><general>John Wiley & Sons, Ltd</general><general>Wiley Subscription Services, Inc</general><scope>BSCLL</scope><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>ASE</scope><scope>FPQ</scope><scope>K6X</scope><scope>K9.</scope><scope>NAPCQ</scope><scope>7X8</scope><scope>8FD</scope><scope>FR3</scope><scope>P64</scope><scope>RC3</scope></search><sort><creationdate>201211</creationdate><title>A test of the psychometric properties of the cancer locus of control scale in Greek patients with advanced cancer</title><author>Mystakidou, Kyriaki ; Tsilika, Eleni ; Parpa, Efi ; Panagiotou, Irene ; Galanos, Antonis ; Gouliamos, Athanasios ; Watson, Maggie</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4864-e4f71b494475a8358d7af302f3a598b3534a4a30399e4f1f900d660864d62fe43</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>Adaptation, Psychological</topic><topic>adjustment</topic><topic>Adult</topic><topic>Aged</topic><topic>Aged, 80 and over</topic><topic>Cancer</topic><topic>Construct validity</topic><topic>Correlation analysis</topic><topic>Discriminant analysis</topic><topic>Factor Analysis, Statistical</topic><topic>Female</topic><topic>Greece</topic><topic>Humans</topic><topic>Internal-External Control</topic><topic>Locus of control</topic><topic>Male</topic><topic>Middle Aged</topic><topic>Neoplasm Staging</topic><topic>Neoplasms - psychology</topic><topic>Oncology</topic><topic>palliative</topic><topic>Palliative Care</topic><topic>Psychometric properties</topic><topic>Psychometrics - methods</topic><topic>Quantitative psychology</topic><topic>Reproducibility of Results</topic><topic>Severity of Illness Index</topic><topic>Surveys and Questionnaires</topic><topic>Terminally ill people</topic><topic>Translating</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Mystakidou, Kyriaki</creatorcontrib><creatorcontrib>Tsilika, Eleni</creatorcontrib><creatorcontrib>Parpa, Efi</creatorcontrib><creatorcontrib>Panagiotou, Irene</creatorcontrib><creatorcontrib>Galanos, Antonis</creatorcontrib><creatorcontrib>Gouliamos, Athanasios</creatorcontrib><creatorcontrib>Watson, Maggie</creatorcontrib><collection>Istex</collection><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>British Nursing Index</collection><collection>British Nursing Index (BNI) (1985 to Present)</collection><collection>British Nursing Index</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>Nursing & Allied Health Premium</collection><collection>MEDLINE - Academic</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Genetics Abstracts</collection><jtitle>Psycho-oncology (Chichester, England)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Mystakidou, Kyriaki</au><au>Tsilika, Eleni</au><au>Parpa, Efi</au><au>Panagiotou, Irene</au><au>Galanos, Antonis</au><au>Gouliamos, Athanasios</au><au>Watson, Maggie</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>A test of the psychometric properties of the cancer locus of control scale in Greek patients with advanced cancer</atitle><jtitle>Psycho-oncology (Chichester, England)</jtitle><addtitle>Psycho-Oncology</addtitle><date>2012-11</date><risdate>2012</risdate><volume>21</volume><issue>11</issue><spage>1215</spage><epage>1221</epage><pages>1215-1221</pages><issn>1057-9249</issn><eissn>1099-1611</eissn><coden>POJCEE</coden><abstract>Objective
The study aimed to assess the psychometric properties of the Cancer Locus of Control (CLOC) scale on a Greek sample of advanced cancer patients.
Methods
The scale was translated with the forward–backward procedure to Greek. The CLOC scale was administered to 140 advanced cancer patients. It was administered twice, with a 3‐day interval, to 100 (of the 140) eligible patients with advanced cancer. Together with the CLOC scale, the patients also completed the Greek Mental Adjustment to Cancer (G‐MAC) scale. Confirmatory factor analysis was carried out using the AMOS 7.0 analysis. The reliability was assessed by the internal consistency (Cronbach's α coefficients), test–retest (Spearman's r value) of the instrument, and inter‐item correlations. Construct validity was assessed using the G‐MAC scale, interscale correlations, item–scale correlations, and scales–total correlations.
Results
The homogeneity of the subscales proved to be satisfactory (α coefficient ranged from 0.713 to 0.786). Overall test–retest reliability was satisfactory at p < 0.0005. Construct validity has shown moderate correlations with G‐MAC p < 0.0005. Interscale and inter‐item correlations were satisfactory at p < 0.05.
Conclusions
The results suggest that the Greek version of CLOC administered in cancer patients treated in a palliative care unit is a reliable and valid clinical instrument. Copyright © 2011 John Wiley & Sons, Ltd.</abstract><cop>Chichester, UK</cop><pub>John Wiley & Sons, Ltd</pub><pmid>21726016</pmid><doi>10.1002/pon.2014</doi><tpages>7</tpages></addata></record> |
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| subjects | Adaptation, Psychological adjustment Adult Aged Aged, 80 and over Cancer Construct validity Correlation analysis Discriminant analysis Factor Analysis, Statistical Female Greece Humans Internal-External Control Locus of control Male Middle Aged Neoplasm Staging Neoplasms - psychology Oncology palliative Palliative Care Psychometric properties Psychometrics - methods Quantitative psychology Reproducibility of Results Severity of Illness Index Surveys and Questionnaires Terminally ill people Translating |
| title | A test of the psychometric properties of the cancer locus of control scale in Greek patients with advanced cancer |
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