The purpose of this study was to investigate and compare the efficacy of four screening tools commonly used to evaluate the nutritional status of cancer patients.A total of 173 patients(average age 50.7±12.9,89 m...The purpose of this study was to investigate and compare the efficacy of four screening tools commonly used to evaluate the nutritional status of cancer patients.A total of 173 patients(average age 50.7±12.9,89 males,84 females)with different pathology at admission were assessed using four nutritional screening tools,including the Body Mass Index(BMI),the Nutritional Risk Index(NRI),Patient-Generated Subjective Global Assessment(PG-SGA),and the Nutrition Risk Screening 2002(NRS 2002).The prevalence of malnourished/at high nutritional risk classified by the BMI,NRI,PG-SGA,and NRS 2002 were 12.7%,32.4%,65.3%,and 20.8%,respectively.Using the PG-SGA as a gold standard,the specificity and positive predictive value of the BMI and NRS 2002 were both 100%.The NRS 2002(K=0.245,P<0.001)and NRI(K=0.301,P<0.001)were found to be in poor agreement with the PG-SGA.The results for the BMI showed a moderate agreement(K=0.713,P<0.001)with the NRS 2002.There was a high prevalence of malnutrition in cancer patients,especially when assessed by the PG-SGA,which was superior to the BMI,NRI,and NRS 2002 in this study.The NRS 2002 may be used to screen for malnutrition and the risk of malnutrition in cancer patients before the implementation of the PG-SGA.展开更多
Suppose β1 〉 α1 ≥ 0, β2 〉 α2 ≥ 0 and （k,j） ∈ R^2. In this paper, we mainly investigate the mapping properties of the operator Tα,βf（x,y,z）=∫Q^2f（x-t,y-s,z-t^ks^j）e^-2πit-β1s-β2t^-1-α1s^-1-α2 dtd...Suppose β1 〉 α1 ≥ 0, β2 〉 α2 ≥ 0 and （k,j） ∈ R^2. In this paper, we mainly investigate the mapping properties of the operator Tα,βf（x,y,z）=∫Q^2f（x-t,y-s,z-t^ks^j）e^-2πit-β1s-β2t^-1-α1s^-1-α2 dtds on modulation spaces, where Q^2 = [0, 1] × [0, 1] is the unit square in two dimensions.展开更多
文摘The purpose of this study was to investigate and compare the efficacy of four screening tools commonly used to evaluate the nutritional status of cancer patients.A total of 173 patients(average age 50.7±12.9,89 males,84 females)with different pathology at admission were assessed using four nutritional screening tools,including the Body Mass Index(BMI),the Nutritional Risk Index(NRI),Patient-Generated Subjective Global Assessment(PG-SGA),and the Nutrition Risk Screening 2002(NRS 2002).The prevalence of malnourished/at high nutritional risk classified by the BMI,NRI,PG-SGA,and NRS 2002 were 12.7%,32.4%,65.3%,and 20.8%,respectively.Using the PG-SGA as a gold standard,the specificity and positive predictive value of the BMI and NRS 2002 were both 100%.The NRS 2002(K=0.245,P<0.001)and NRI(K=0.301,P<0.001)were found to be in poor agreement with the PG-SGA.The results for the BMI showed a moderate agreement(K=0.713,P<0.001)with the NRS 2002.There was a high prevalence of malnutrition in cancer patients,especially when assessed by the PG-SGA,which was superior to the BMI,NRI,and NRS 2002 in this study.The NRS 2002 may be used to screen for malnutrition and the risk of malnutrition in cancer patients before the implementation of the PG-SGA.
基金Supported by NNSF(Grant Nos.11201003 and 11771223)University NSR Project of Anhui Province(Grant Nos.KJ2017ZD27 and KJ2015A117)
文摘Suppose β1 〉 α1 ≥ 0, β2 〉 α2 ≥ 0 and （k,j） ∈ R^2. In this paper, we mainly investigate the mapping properties of the operator Tα,βf（x,y,z）=∫Q^2f（x-t,y-s,z-t^ks^j）e^-2πit-β1s-β2t^-1-α1s^-1-α2 dtds on modulation spaces, where Q^2 = [0, 1] × [0, 1] is the unit square in two dimensions.
