The traditional paternalistic approach in health care is increasingly developing towards a patient-centered care (PCC) approach. However, not all patients are able to take advantage of the positive effects of PCC. Inadequate health literacy (HL) is an important limiting factor in the ability of patients to take on an active role and exchange information with their health care provider effectively. A provenly effective approach to improvement of provider-patient interaction and health outcomes is the use of health-related questionnaires. The aim of the research project described within this thesis was to adapt the most frequently-used questionnaire in Dutch physical therapy practice and add information and communication technology to it. A Dutch and Turkish version of the tool called Talking Touch Screen Questionnaire (TTSQ) was developed and evaluated on both usability and validity aspects. The current prototype of the tool does not yet fully solve the problems native and minority patients with low (health) literacy have with completing the adapted questionnaire. Big challenges in future development and testing the TTSQ are the recruitment of vulnerable members of the hard-to-reach native and minority target populations and finding research methods that suit the abilities and needs of these participants. This is expected to be a very challenging, labor- and time-consuming process. On the other hand, having a usable, valid and reliable TTSQ may well save a lot of time and money in both research and clinical practice in the future.
Objective: To explore the relationship between personal characteristics of older adults with multiple chronic conditions (MCCs) and perceived shared decision making (SDM) resp. decisional conflict. Methods: In a video-observational study (N = 213) data were collected on personal characteristics. The main outcomes were perceived level of SDM and decisional conflict. The mediating variable was participation in the SDM process. A twostep mixed effect multilinear regression and a mediation analysis were performed to analyze the data. Results: The mean age of the patients was 77.3 years and 56.3% were female. Health literacy (β.01, p < .001) was significantly associated with participation in the SDM process. Education (β = −2.43, p = .05) and anxiety (β = −.26, p = .058) had a marginally significant direct effect on the patients’ perceived level of SDM. Education (β = 12.12, p = .002), health literacy (β = −.70, p = .005) and anxiety (β = 1.19, p = .004) had a significant direct effect on decisional conflict. The effect of health literacy on decisional conflict was mediated by participation in SDM. Conclusion: Health literacy, anxiety and education are associated with decisional conflict. Participation in SDM during consultations plays a mediating role in the relationship between health literacy and decisional conflict. Practice Implications: Tailoring SDM communication to health literacy levels is important for high quality SDM.
Background: Accurate measurement of health literacy is essential to improve accessibility and effectiveness of health care and prevention. One measure frequently applied in international research is the Short Assessment of Health Literacy (SAHL). While the Dutch SAHL (SAHL-D) has proven to be valid and reliable, its administration is time consuming and burdensome for participants. Our aim was to further validate, strengthen and shorten the SAHL-D using Rasch analysis. Methods: Available cross-sectional SAHL-D data was used from adult samples (N = 1231) to assess unidimensionality, local independence, item fit, person fit, item hierarchy, scale targeting, precision (person reliability and person separation), and presence of differential item functioning (DIF) depending on age, gender, education and study sample. Results: Thirteen items for a short form were selected based on item fit and DIF, and scale properties were compared between the two forms. The long form had several items with DIF for age, gender, educational level and study sample. Both forms showed lower measurement precision at higher health literacy levels. Conclusions: The findings support the validity and reliability of the SAHL-D for the long form and the short form, which can be used for a rapid assessment of health literacy in research and clinical practice.
