{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,18]],"date-time":"2026-08-18T16:40:14Z","timestamp":1787071214069,"version":"build-2736575974"},"reference-count":35,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"1","content-domain":{"domain":["lww.com","ovid.com"],"crossmark-restriction":true},"short-container-title":[],"abstract":"\n Background:<\/jats:title>\n Lipid disorder is a modifiable risk factor for diseases related to plaque formation in arteries such as heart attack, stroke, and peripheral vascular diseases. Identifying related factors and diagnosis and treatment in time reduces the incidence of non-communicable diseases (NCDs). The aim of this study was to determine factors associated with lipids based on a national survey data.<\/jats:p>\n <\/jats:sec>\n \n Methods:<\/jats:title>\n \n Data of 16757 individuals aged 25\u201364 years obtained from the Iranian STEPwise approach to NCD risk factor surveillance (STEPs) performed in 2016, through multistage random sampling, were analyzed. Because of clustered, hierarchical, and skewed form of the data, factors related to total holesterol (TC), triglycerides (TG), low-density lipoprotein-cholesterol) (LDL-C), high-density lipoprotein-cholesterol) (HDL-C), TG\/HDL-C, TC\/HDL-C, and LDL-C\/HDL-C were determined applying multilevel quantile mixed model. Parameters of the model were estimated on the basis of random effect of the province as well as urban or rural area for 10\n th<\/jats:sup>\n , 25\n th<\/jats:sup>\n , 50\n th<\/jats:sup>\n , 75\n th<\/jats:sup>\n , and 90\n th<\/jats:sup>\n quantiles. Statistical analyses were performed by R software version 4.0.2.\n <\/jats:p>\n <\/jats:sec>\n \n Results:<\/jats:title>\n Significant relationship was found between age, body mass index (BMI), waist circumference (WC), diabetes, hypertension, smoking, physical activity, education level, and marital status with TC, LDL-C, HDL-C, LDL-C, and LDL-C\/HDL-C. With increasing BMI and WC, subjects had higher levels of serum lipids, especially in higher quantiles of lipid levels. Lipid levels were significantly increased among smokers and those with diabetes or hypertension. The random effects were also significant showing that there is a correlation between the level of lipids in provincial habitants as well as urban and rural areas.<\/jats:p>\n <\/jats:sec>\n \n Conclusions:<\/jats:title>\n This study showed that the effect of each factor varies depending on the centiles of the lipids. Significant relationship was found between sociodemographic, behaviors, and anthropometric indices with lipid parameters.<\/jats:p>\n <\/jats:sec>","DOI":"10.4103\/ijpvm.ijpvm_464_21","type":"journal-article","created":{"date-parts":[[2024,5,28]],"date-time":"2024-05-28T08:34:09Z","timestamp":1716885249000},"update-policy":"https:\/\/doi.org\/10.1097\/lww.0000000000001000","source":"Crossref","is-referenced-by-count":1,"title":["Identifying Factors Related to Serum Lipids Using Multilevel Quantile Model: Analysis of Nationwide STEPs Survey 2016"],"prefix":"10.4103","volume":"14","author":[{"given":"Parisa","family":"Mohseni","sequence":"first","affiliation":[{"name":"Department of Epidemiology, School of Public Health and Safety, Shahid Beheshti University of Medical Sciences, Tehran, Islamic Republic of Iran"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Davood","family":"Khalili","sequence":"additional","affiliation":[{"name":"Prevention of Metabolic Disorders 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