Dijkstra, A. (Anita) (2013) Nederlandse vertaling van een vragenlijst (SPOC) om het functioneel herstel na letsel van de onderste extremiteiten te voorspellen. thesis, Medicine.
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Abstract
Background: Illness perceptions and patient expectations regarding their recovery have an influence on their recovery and treatment success. Positive illness perceptions and patient expectations are found to be associated with better clinical outcomes. The Somatic Pre-Occupation and Coping Questionnaire (SPOC) was constructed in Canada to capture the impact of patients’ beliefs on functional recovery from injury and to see if illness perceptions are predictive for long-term functional outcomes. The English version of the questionnaire consisted 27 items divided into four subscales: Somatic complaints, Coping, Energy and Optimism. The questionnaire has proved to be valid for charting the illness perceptions and patients expectations in patients with a tibial fracture. Moreover, the questionnaire is highly predictive of functional outcomes and return to work of these patients 1 year after injury. There is no questionnaire to assess illness perceptions and patients expectations available in the Netherlands. For that reason, the SPOC is translated and culturally adapted into Dutch. The purpose of this study was to investigate the internal consistency, validity and the test-retest reliability of the Dutch version of the SPOC-NL for charting patients’ expectations and illness perceptions in patients with lower extremity injury. Also, the relationship of the SPOC-NL with workstatus and workability is investigated. Methods: The study population consisted of 106 patients (18-75 year) who are surgically treated, at least 6 weeks to one year ago, for lower extremity injury at the Traumatology department at UMCG. To determine the construct validity all respondents filled in the SPOC-NL, the SF-36, the SMFA-NL, the EQ-5D and the HUI 3. To evaluate the construct validity predefined hypotheses were formulated. To determine the test-retest reliability, 62 respondents filled in the SPOC-NL for a second time after a time interval of two weeks. The following analyses were performed to evaluate clinimetric quality of the SPOC-NL: principal component analysis (factoranalysis), Cronbach’s alpha (internal consistency), Spearman’s Rho (r) (construct validity), intraclass correlation coefficients (ICC) and the Bland & Altman method (test-retest reliability). Also, a One-Way ANOVA and a linear regression analysis were performed to investigate the relationship between SPOC-NL and workstatus and work ability. Results: Factor analysis demonstrated three subscales of the SPOC-NL: Physical function, Emotional and Mental function and Illness perceptions and expectations. All subscales showed good internal consistency (Cronbach’s alpha > 0.70). Construct validity was good: moderate to strong correlations (r = 0.35 – 0.82) were found between the subscales of the SPOC-NL and the respective subscales of the SF-36, SMFA-NL, EQ-5D and the HUI 3. Of the predefined hypotheses 77% could be confirmed. The test-retest reliability was high (ICC = 0.71 – 0.90), with no systematic bias between the first and second assessment. It showed also that the better the work ability, the higher the SPOC-NL score. Also, workstatus showed a relation with SPOC-NL score: patients on sickness benefit or patients who are disabled had a significant worse score (p = 0,04) than patients with a paid job, on the subscale Illness perceptions and expectations. Besides, these patients had also significant lower scores (p < 0,001 – 0,03) than patients with a paid job, pension and those who were unemployed, on the subscale Physical function. Conclusion: This study shows that the SPOC-NL is a valid, reliable method to assess the patients expectations and illness perceptions of patients with lower extremity injury. In addition, there may be a relation between the SPOC-NL scores and work ability and work situation of patients with lower extremity injury.
| Item Type: | Thesis (Thesis) |
|---|---|
| Supervisor name: | Reininga, dr. I. H. F. |
| Faculty: | Medical Sciences |
| Date Deposited: | 25 Jun 2020 11:01 |
| Last Modified: | 25 Jun 2020 11:01 |
| URI: | https://umcg.studenttheses.ub.rug.nl/id/eprint/2117 |
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