Zumbrunn and colleagues, unpublished data) (Figure 1) For reason

Zumbrunn and colleagues, unpublished data) (Figure 1). For reasons of consistency, the experts assessed all risks separately for an average traveler

Idelalisib manufacturer to Africa, Latin America, and Asia/Pacific. The study was approved by the Ethics Committee of Basel. The visual psychometric measuring instrument applied to record the participants’ risk perception, pictorial representation of illness and self measure (PRISM), was developed in 1995 and validated for the assessment of the subjective burden of suffering in patients with chronic diseases.[15, 16] It consists of a white board in DINA4 format with a fixed yellow disc, symbolizing a subject’s “self” in her/his current life situation, and a movable disc, representing an illness, which is placed on the board by the subject (Figure 2). The distance between the “self” and the illness [self-illness separation (SIS)] is the primary outcome of PRISM and inversely proportional to the perceived importance of the illness. For this study, “life situation” was specified as the planned journey and “illness” replaced by nine

health risks. The primary outcome was adjusted to self-risk separation (SRS) as a proxy for the risk perception. According to the severity, frequency of occurrence, or estimated concern for travelers, the following risks were included: Sirolimus general risk (overall danger of a specific journey), mosquitoes, malaria, rabies, Anacetrapib epidemic outbreaks, sexually transmitted infections (STIs), accidents, terrorist attacks, and vaccination-associated adverse events (VAEs). In 2008, pre-travel data collection was carried out by a computer application of PRISM[17] (T. Zumbrunn and colleagues, unpublished data). For technical reasons, pre-travel data in 2009, expert data, and all post-travel data were collected using hard copies of the computer application. The

forms were scanned and distances measured by means of a computer-aided design (CAD) program.[18] The CAD coordinates were converted to the original scale (cm). Differences between the median perceptions of travelers and experts with nonoverlapping confidence intervals (CIs) were considered as statistically significant. The CIs were calculated using a bootstrap re-sampling method with 500 replicates. Linear regression was applied to detect differences among traveler subgroups and the SRS log10-transformed prior to analysis. A two-sided p value < 0.05 was considered as statistically significant. No adjustments for multiple testing were made. All analyses were performed using PASW Statistics 18 and R version 10.

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