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The aim of this study was to determine the onset, length and end of the ragweed pollen season, taking into account diurnal, day-to-day, monthly and annual pollen variations, the effect of some meteorological parameters on atmospheric pollen concentrations and possible differences in the airborne pollen season and concentration due to sampling site. Airborne pollen was collected at three sites in central Croatia (Zagreb, Samobor and Ivanić Grad) during three pollen seasons (2002)(2003)(2004). Seven-day Hirst-type volumetric pollen traps were used for pollen sampling. Ragweed pollen was the third most abundant pollen type to occur in the atmosphere of central Croatia. Total Ambrosia pollen concentration was the highest in the 2003 pollen season and the lowest in 2004 at all sampling sites. Maximum emissions were restricted to August and September. Intradiurnal periodicity showed a peak from 1000 to 1200 hours. The concentration of ragweed pollen during the pollen season was greatly influenced by temperature and precipitation: on rainy days accompanied by temperature decline, the air pollen concentration decreased abruptly. The results of this study are aimed at helping to alleviate the symptoms of allergic reactions in individuals with ragweed pollen hypersensitivity, thus improving their quality of life.

This study addressed the issue of medication compliance in general, compliance with antihypertensive therapy, and the relationship between these two groups. In addition to determining the reasons for noncompliance with therapy prescription, the aim of this study was to also establish whether it was considered feasible by the patients to comply with their physician's instructions and whether the patients believed that the prescribed therapy was beneficial to their health. Hypertensive patients were compared to the total study population according to age groups. The study was designed as a cross-sectional survey with the use of a 33-item self-administered questionnaire. The study included 635 individuals who were collecting or buying drugs for the treatment of chronic diseases, with special reference to subjects taking antihypertensive agents (n = 361). More than half (n = 361; 56.9%) of the 635 study subjects were on therapy for arterial hypertension and possibly for some other diseases. The great majority of study subjects reported forgetfulness as the main reason for skipping drug doses. Comparison between the total study population and the subjects treated for arterial hypertension according to age groups (compliant, noncompliant and all together) yielded no statistically significant difference. We concluded that there was no difference in medication compliance between the general patient population and patients receiving antihypertensive therapy and there was no correlation between medication compliance and age.

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