The association between waist-to-hip ratio (WHR) with diabetes in the PERSIAN Guilan cohort study population.

Background: Waist circumference (WC), or waist-to-hip ratio (WHR), potentially offers a more accurate reflection of intra-abdominal fat accumulation and could serve as a superior predictor of type 2 diabetes mellitus (T2DM) risk compared to BMI. The current study investigated the relationship between WHR and its influencing factors among diabetes patients enrolled in the Prospective Epidemiological Research Studies in Iran (PERSIAN) Guilan Cohort study (PGCS).

Method: In this cross-sectional study of 10,520 participants, 2,531 had T2DM.

Waist Circumference and Spirometric Measurements in Chronic Obstructive Pulmonary Disease.

Objectives: The aim of this study was to evaluate whether the waist circumference of patients with chronic obstructive pulmonary disease (COPD), had an impact on lung function.

Methods: There were 180 patients with COPD recruited into this prospective cross-sectional study. The age, weight, body mass index and waist circumference (WC) were measured.

The Association between Dyslipidemia and Preterm Birth: A Prospective Cohort Study in The North of Iran.

Background: Dyslipidemia is recognized as an important factor in the incidence of Preterm Birth (PTB). The early diagnosis of factors affecting PTB is important in the reduction of maternalneonatal complications; therefore, we aimed to evaluate the association between dyslipidemia and PTB in women from the Guilan province of Iran.

Methods: The current investigation was a prospective cohort study on 378 pregnant women in Rasht city (Guilan province), during 2018-2019.