Objective To assess the obesity prevalence in body mass index （BMI） and body fat percentage Saudi adults according to the international standards of （BF%）. Methods Five hundred and thirty healthy Saudi adults aged...Objective To assess the obesity prevalence in body mass index （BMI） and body fat percentage Saudi adults according to the international standards of （BF%）. Methods Five hundred and thirty healthy Saudi adults aged 18-72 years （mean 36.91＋15.22 years） were enrolled in this study. Their body composition was assessed by bioelectrical impendence analysis with a commercially available body composition analyzer. Standard BMI and BF% values were used to define obesity. Results The prevalence of underweight, normal underweight, overweight and obesity in Saudi adults according to the BMI criteria （〈18.5 kg/mz, 18.5-24.4 kg/m2, 25-29.9 kg/m2, 30 k＆/m2 and above, respectively） was 2.5%, 30.2%, 33.6%, and 33.8%, respectively, whereas the obesity prevalence was 60% （n=31g） in Saudi adults according to the BF% criteria （25% for males and 30% for females）, which was significantly higher than that according to BMI criteria. However, it was 50.6% （n=268） when the BMI cutoff point was 27.5 kg/m2, proposed by WHO for the Asian population. Kappa analysis showed that the obesity prevalence defined by BMI and BF% was higher in females than in males （k=0.530 vs k=0.418, P〈O.O001）. The sensitivity and specificity of BMI （30 kg/m2 and 27.5 kg/m2） were 54.1% and 96.7% and 76.4% and 88.2%, respectively, for obesity. A lower BMI cutoff point （26.60 kg/m2） was proposed in this study, which gave the maximum sensitivity （84.3%） and specificity （85.4%）, with a moderate kappa agreement （k=0.686）. Moreover, the obesity prevalence at this cutoff point （56.4%） was significantly higher than that recommended by WHO. Conclusion The specificity of BMI for obesity is high and its sensitivity is low in both sexes. Its sensitivity can be increased by changing BMI cutoff to a lower value. The choice of BF% reference is of great influence for the assessment of obesity prevalence according to the BMI.展开更多
Introduction:Effective on-site disinfection of epidemic foci is a critical role in preventing the transmission of infectious diseases.On-site disinfection service providers(ODSP)are a key force in the emergency respon...Introduction:Effective on-site disinfection of epidemic foci is a critical role in preventing the transmission of infectious diseases.On-site disinfection service providers(ODSP)are a key force in the emergency response systems.This study assessed ODSP capabilities and developed a standardized evaluation indicator system to aid managers in provider selection and supervision.Methods:A capability evaluation indicator system for ODSP was developed and applied to 88 providers in Shanghai in 2024.Receiver operating characteristic(ROC)curves were plotted by correlating the capability evaluation scores of ODSP with historical disinfection efficacy to determine the optimal threshold.Kappa consistency analysis evaluated the agreement between the new scoring system and historical performance outcomes.Results:The scoring rates for management systems,material reserves,personnel capability,and quality control were 93.75%,90.45%,75.08%,and 51.97%,respectively.ODSP with a history of failed on-site disinfection efficacy evaluations scored significantly lower in personnel capability and quality control than those with consistently passing evaluations(P<0.01).The area under the ROC curve(AUC)for the assessment indicators was 0.954[95%confidence interval(CI):0.898,1],with an optimal capability score threshold of 70 points.The Kappa coefficient was 0.822.Conclusion:ODSP should further strengthen its quality control measures.There is a significant gap in capability scores among these providers;therfore a hierarchical certification system should be established.The evaluation indicator system for these providers can serve as a tool to assist in dynamic supervision.展开更多
文摘Objective To assess the obesity prevalence in body mass index （BMI） and body fat percentage Saudi adults according to the international standards of （BF%）. Methods Five hundred and thirty healthy Saudi adults aged 18-72 years （mean 36.91＋15.22 years） were enrolled in this study. Their body composition was assessed by bioelectrical impendence analysis with a commercially available body composition analyzer. Standard BMI and BF% values were used to define obesity. Results The prevalence of underweight, normal underweight, overweight and obesity in Saudi adults according to the BMI criteria （〈18.5 kg/mz, 18.5-24.4 kg/m2, 25-29.9 kg/m2, 30 k＆/m2 and above, respectively） was 2.5%, 30.2%, 33.6%, and 33.8%, respectively, whereas the obesity prevalence was 60% （n=31g） in Saudi adults according to the BF% criteria （25% for males and 30% for females）, which was significantly higher than that according to BMI criteria. However, it was 50.6% （n=268） when the BMI cutoff point was 27.5 kg/m2, proposed by WHO for the Asian population. Kappa analysis showed that the obesity prevalence defined by BMI and BF% was higher in females than in males （k=0.530 vs k=0.418, P〈O.O001）. The sensitivity and specificity of BMI （30 kg/m2 and 27.5 kg/m2） were 54.1% and 96.7% and 76.4% and 88.2%, respectively, for obesity. A lower BMI cutoff point （26.60 kg/m2） was proposed in this study, which gave the maximum sensitivity （84.3%） and specificity （85.4%）, with a moderate kappa agreement （k=0.686）. Moreover, the obesity prevalence at this cutoff point （56.4%） was significantly higher than that recommended by WHO. Conclusion The specificity of BMI for obesity is high and its sensitivity is low in both sexes. Its sensitivity can be increased by changing BMI cutoff to a lower value. The choice of BF% reference is of great influence for the assessment of obesity prevalence according to the BMI.
基金Supported by the Three-Year Initiative Plan(2023−2025)for Strengthening Public HealthSystem Construction in Shanghai,Key Disciplines(GWVI-11.1-04)the Three-Year Action Program(2023–2025)of Shanghai Municipality for Strengthening the Construction of Public Health System(GWVI-1).
文摘Introduction:Effective on-site disinfection of epidemic foci is a critical role in preventing the transmission of infectious diseases.On-site disinfection service providers(ODSP)are a key force in the emergency response systems.This study assessed ODSP capabilities and developed a standardized evaluation indicator system to aid managers in provider selection and supervision.Methods:A capability evaluation indicator system for ODSP was developed and applied to 88 providers in Shanghai in 2024.Receiver operating characteristic(ROC)curves were plotted by correlating the capability evaluation scores of ODSP with historical disinfection efficacy to determine the optimal threshold.Kappa consistency analysis evaluated the agreement between the new scoring system and historical performance outcomes.Results:The scoring rates for management systems,material reserves,personnel capability,and quality control were 93.75%,90.45%,75.08%,and 51.97%,respectively.ODSP with a history of failed on-site disinfection efficacy evaluations scored significantly lower in personnel capability and quality control than those with consistently passing evaluations(P<0.01).The area under the ROC curve(AUC)for the assessment indicators was 0.954[95%confidence interval(CI):0.898,1],with an optimal capability score threshold of 70 points.The Kappa coefficient was 0.822.Conclusion:ODSP should further strengthen its quality control measures.There is a significant gap in capability scores among these providers;therfore a hierarchical certification system should be established.The evaluation indicator system for these providers can serve as a tool to assist in dynamic supervision.
