The effects Compound Library concentration of a change of location were investigated for the day

prior to CoR (CoR−1), the CoR (CoR0, eg, travel day), and the first day at the new location (CoR+1). The fifth day after the change of residence (CoR+5) was used as a post-CoR reference value. Perceived travel strain was measured with a 4-point worded scale [“travel strain was very (4), rather (3), hardly (2), not at all (1) strenuous”]. To test for the adequacy of the given sample size, a statistical power calculation was conducted using the power calculator provided by our University, imputing the baseline and average response values. The statistical power of the three significant variables was 0.26/0.36/0.90 (systolic BP/diastolic BP/sleep), indicating a small power for detecting differences in BP, but a large power for detecting differences in sleep. To test for the feasibility of using a parametrical statistical approach, the normal distribution of all four dependent variables (diastolic BP, systolic BP, quality of sleep, and mood) during pre-travel baseline and on the four single days around the CoR was controlled for visually on the basis of histograms. All distributions were found to be adequate. To analyze the effect

of the CoR, a multivariate analysis of variance for repeated measures was LEE011 research buy calculated for the five time points BL, CoR−1, CoR0, CoR+1, and CoR+5, thereby comparing each of the days CoR−1 to CoR+5 with the baseline value Decitabine (BL) using so-called “simple contrasts.” Thus, four contrasts were calculated for every variable. The statistical significance of these comparisons (p values) is displayed in Table 2. All four outcome variables were analyzed simultaneously in the multivariate approach, thus following the suggestions of Drummond to use one global statistical test.[38] Also, this approach controlled for the multiple comparisons calculated. To test for possible differences between morning and evening

BP readings, average morning and evening BP responses (average of CoR−1, CoR0, CoR+1 − BL) were compared using t-tests for paired samples. To test the association of the responses to the CoR with variables describing the study participants, their medical condition and travel, the correlation of the response values (average of CoR−1, CoR0, CoR+1 − BL) of BP, sleep, and mood with these variables was calculated. Also, the inter-correlation of the average responses of the four outcome variables to the CoR was determined. To test the validity of the scales used, their correlation with standardized scales, clinical BP readings, or other external variables was calculated. All analyses were conducted using SPSS 15.0. The results illustrated in Figure 1 are based on means and confidence intervals.