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体块指数(body mass index,BMI)是一种用于评估营养状态的人体测量指标,BMI=体重(kg)/高度(m)~2。早在1990年,Tayback等已用于预测危重病人的死亡率,提示体重过高或过低者均有较高的死亡率。为了进一步阐明二者的关系,波士顿Beth Israel医院等5家三级医疗中心于1989～1991年共同执行SUPPORT研究计划(了解预后、结局和治疗危机的研究),入选者年龄≥18岁,患有9种危重疾病之一,预测在6个月内死亡率为50％,但不包括入院后
Body mass index (BMI) is a body measurement used to assess nutritional status. BMI = body weight (kg) / height (m) ~ 2. As early as 1990, Tayback et al. Have been used to predict the mortality of critically ill patients, suggesting that those with overweight or underweight have higher mortality rates. To further elucidate their relationship, five tertiary care centers, including Beth Israel Hospital in Boston, jointly conducted the SUPPORT research program (Understanding Outcomes, Outcomes, and Treatment Crisis Studies) from 1989 to 1991 with a mean age of 18 years or older with One of nine critical illnesses, which predicts a 50% mortality within 6 months but does not include after admission