Objective To analyze the prevalence and risk factors of anemia in a general population in Kailuan.Methods Working and retired employees m Kailuan Company who had participated in biennial physical examination from 2006-2014 were investigated by questionnaire and blood test.Hemoglobin levels＜ 120 g/L in male and＜ 110 g/L in female are defined as anemia.The trend of prevalence of anemia was analyzed by chi square test.Multivariable logistic regression was used to analyze the factors associated with anemia.Results (1) The biennial prevalence of anemia in Kailuan during 2006-2014 were 3.7％,3.1％,2.4％,1.3％,1.5％.The corresponding proportion were 3.3％,2.3％,1.9％,0.8％,1.0％ in males and 5.3％,5.9％,4.2％,3.1％ and 3.3％ in females,respectively.The differences between males and females were statistically significant (all P＜0.05).The prevalence of anemia declined over time (P for trend＜0.05).(2) The results of multivariable logistic regression showed that aging and elevated hs-CRP were positively associated with anemia,with OR=1.01 (95％CI 1.01-1.02)and 1.03 (95％CI 1.02-1.03),respectively.While male,BMI,physical exercise,smoking,hyperlipidemia were negatively associated with anemia with OR=0.60(95％CI 0.55-0.65),0.99 (95％CI 0.98-0.99),0.91 (95％CI 0.82-0.98),0.87 (95％CI 0.81-0.95)and 0.87(95％CI0.81-0.94),respectively.Conclusions The prevalence of anemia in a large general population in Kailuan has been analyzed.Prevalence of anemia is higher in males than females and declines over time.Several demographic and clinical characteristics are associated with anemia.

Objective To analyze the risk factors for lung injury and pulmonary arterial hypertension in patients with chronic obstructive pulmonary disease(COPD),and the predictive value of serum SDF-1 and sRAGE for lung injury and pulmonary arterial hypertension.Methods A total of 200 patients with COPD admitted to our hospital from January 2021 to January 2023 were selected as research objects,23 of whom occurred lung injury and the rest 177 had no lung injury,and 31 developed pulmonary hypertension and the remaining 169 had no pulmonary hypertension.The predictive value of serum SDF-1 and sRAGE for pulmonary injury and pulmonary hypertension was analyzed.Results Multi-factor logistic regression analysis showed that D-D,PCT,CRP,RDW,MPV,PLT,NLR,SDF-1,sRAGE,pulmonary hypertension,arterial blood oxygen partial pressure,FVC and FEV1 were the main factors affecting lung injury in patients with COPD.D-D,PCT,CRP,RDW,MPV,PLT,NLR,SDF-1,sRAGE,arterial partial oxygen pressure,FVC,FEV1 and CT angiographic pulmonary artery volume were the main factors affecting the occurrence of pulmonary hypertension in those patients(P<0.05).Serum SDF-1 and sRAGE were positively correlated with lung injury and pulmonary hypertension in patients with COPD(P<0.05).The sensitivity and accuracy of SDF-1 and sRAGE for predicting lung injury and pulmonary hyperten-sion in patients with COPD were higher than those of SDF-1 and SRage alone(P<0.05).Conclusions Pulmonary injury in patients with COPD is associated with D-D,PCT,CRP,RDW,MPV,PLT,NLR,SDF-1,sRAGE,pulmonary hypertension,arterial blood oxygen partial pressure,FVC,FEV1.The occurrence of pulmonary hyper-tension is related to D-D,PCT,CRP,RDW,MPV,PLT,NLR,SDF-1,sRAGE,arterial partial pressure of oxy-gen,FVC,FEV1 and CT angiography of pulmonary artery volume.Combined detection of SDF-1 and sRAGE has a higher predictive value for lung injury and pulmonary hypertension.