Allergic rhinitis (AR) is a prevalent disease affecting the quality of life of patients throughout the world. This study aimed to assess the prevalence of AR and its association with chronic rhinosinusitis (CRS) in the adult population living in Bushehr, southwestern part of Iran. In this population-based study, a total of 5420 individuals aged 15-65 years were selected through a multi-stage, cluster, random sampling method from which 5201 of them completed the Global Allergy and Asthma Network of Excellence (GA2LEN) questionnaire (Response rate=96.1%). The prevalence of AR, based on Allergic Rhinitis and Its Impact on Asthma (ARIA) classification (mild or moderate; intermittent or persistent) was calculated and the association of AR and CRS was evaluated using a multiple logistic regression model. The overall prevalence of AR was 28.8%, and for the intermittent and persistent AR were 25.9% (out of which 81.34% were moderate to severe) and 74.1% respectively. Moreover, the prevalence of AR was significantly higher in health workers and smokers (p=0.002 and p<0.001, respectively). Furthermore, an association was found between AR and CRS (p<0.001, aOR: 4.68, 95%CI: 4.07-5.39), and also, between the persistent AR and CRS as compared with the intermittent (p<0.001, aOR: 4.21, 95%CI: 3.40-5.22). The present study showed that the prevalence of AR in Bushehr (Southwestern part of Iran) was significantly high. In addition, the results indicated a strong association between AR and CRS, especially in individuals with moderate to severe persistent AR.

Background: Atherosclerotic cardiovascular disease (ASCVD) remains a leading cause of global morbidity and mortality. This study assessed the 10-year ASCVD risk and evaluated 5-year follow-up outcomes among adults in the Sabzevar PERSIAN Cohort Center, northeast Iran. Methods: Baseline data were collected in 2018, with follow-up completed in 2023. Risk factors including age, gender, blood pressure, cholesterol levels, smoking status, and diabetes were assessed. The 10-year ASCVD risk was calculated using the American College of Cardiology's risk estimator and categorized as low (<5%), borderline (5–7.4%), intermediate (7.5–19.9%), or high (≥20%). A Cox proportional hazards model evaluated the association between age, gender, diabetes, and ASCVD events. Results: Among 2,871 participants, men had higher blood pressure, while women had higher levels of total cholesterol, HDL, and LDL (P < 0.05). Hypertension was more prevalent in men than in women (P < 0.001). Diabetes was present in 13.8% (n = 397) of participants, with no significant difference between men and women. The distribution of 10-year ASCVD risk was as follows: low (74.58%), borderline (9.3%), intermediate (13.96%), and high (2.16%). Men had a significantly higher ASCVD risk than women (P < 0.001). During the 5-year follow-up, 1.2% (n = 34) of participants experienced ASCVD events. In multivariable analysis, age (P < 0.001), male gender (P < 0.001), and diabetes (P = 0.013) were significant predictors of ASCVD events. Conclusion: ASCVD risk estimation and early intervention, particularly for older adults and individuals with diabetes, are essential. These findings support targeted prevention efforts in northeast Iran and similar populations.