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【单选题】
如在急性吸入毒性实验当中,随着苯的浓度越来越高,各试验组的小鼠死亡率也相应增高,这说明存在质反应关系
A.
量反应关系
B.
质反应关系
C.
剂量-量反应关系
D.
剂量-质反应关系
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举一反三
【单选题】年龄别死亡率常用于（）。
A.
因年龄叙述错误而对死亡率进行更正
B.
确定人群中某一确定年龄组的实际死亡数
C.
由于年龄缺失而对死亡进行更正
D.
对同年龄组人群的死亡进行比较
E.
在比较死亡率时，排除因不同人群中年龄分布不同带来的影响
【单选题】Sleeping People who sleep for more than eight hours a night do not live as long as those who sleep for six hours, according to the biggest study yet into sleep patterns and mortality(死亡率). Scientists...
A.
Although it is a common belief that sleeping for at least eight hours a night is vital for health and well—being. the six. year study involving more than 1. 1 million Americans older than 30 found that those who slept for less than eight hours were far from doing themselves any long—term harm。
B.
"Individuals who now average 6. 5 hours of sleep a night Can be reassured that this is a safe amount of sleep. From a health standpoint。there is no reason to sleep longer," said Daniel Kripke , a professor of psychiatry(精神病学)at the University of California, San Diego.
C.
Dr. Kripke said. "We don’t know if long sleep periods lead to death. Additional studies are needed to determine if setting your alarm clock earlier will actually improve your health. "
D.
The scientists. who were funded by the American Cancer Society, found at the best survival rates were among the men and women who slept for seven hours a night. Those who
E.
slept for eight hours were 12 per cent more likely to die during the six—year period of the study,
F.
when other factors such as diet and smoking were taken into account.
G.
Even those who spent a mere five hours a night in bed lived longer than those who slept eight or more hours. However, an increasing death rate was found among those who slept for less than five hours.
H.
Dr. Kripke said. "Previous sleep studies have indicated that both short-and long-duration(持续时间)sleep had higher mortality rates. However, none of those studies were large enough to distinguish the difference between seven and eight hours a night, until flow. \
【单选题】孕产妇死亡率是（）
A.
人群健康学指标
B.
日常生活质量指标
C.
临床健康学指标
D.
社会健康学指标
E.
人群生活状况指标
【单选题】粗死亡率的定义是
A.
按性别计算的所有死亡者占全人群的比例
B.
一定时期内，所有患者中死于某病的频率
C.
在所有死亡者中死于某病的比例
D.
一定时期内，总死亡人数占该人群同期平均人口数的比例
E.
按病种计算的某病的所有死亡者占全人群的比例
【单选题】Driving cars, trucks and motorcycles is an important part of our lives. We do it every day to get to work, to school, to friends’ houses and so on. Driving can make our life convenient, but can also c...
A.
Right.
B.
Wrong.
C.
Doesn’t say.
【单选题】该社区年度总死亡率为（）
A.
0.90‰
B.
2.00‰
C.
0.50‰
D.
1.20‰
E.
125%某社E年均人口为10万，年内肿瘤患者共400人，年内共死亡200人，其中60岁以上死亡90人；在全部死亡者中，因肿瘤死亡人数为50人，该社区年内共出生120人。
【单选题】新生儿死亡率是指
A.
出生28天内死亡的新生儿在同期活产总数中的比值
B.
出生30天内死亡的新生儿在同期活产总数中的比值
C.
出生14天内死亡的新生儿在同期活产总数中的比值
D.
出生28天内死亡伪新生儿在同期分娩总数中的比值
E.
出生1年内死亡的新生儿在同期活产总数中的比值
【单选题】下列因素与腹部伤的死亡率无关的是（）
A.
受伤距早期救治的时间
B.
火器伤还是钝性伤
C.
有无内脏损伤及合并伤
D.
患者的全身情况及对创伤的耐受性
E.
急救措施和治疗技术
【单选题】计算标准化死亡率的目的是
A.
减少死亡率估计的系统误差
B.
减少死亡率估计的抽样误差
C.
便于不同时间死亡率的比较
D.
便于不同人群死亡率的比较
E.
消除内部构成不同而便于比较
相关题目：
【单选题】年龄别死亡率常用于（）。
A.
因年龄叙述错误而对死亡率进行更正
B.
确定人群中某一确定年龄组的实际死亡数
C.
由于年龄缺失而对死亡进行更正
D.
对同年龄组人群的死亡进行比较
E.
在比较死亡率时，排除因不同人群中年龄分布不同带来的影响
【单选题】Sleeping People who sleep for more than eight hours a night do not live as long as those who sleep for six hours, according to the biggest study yet into sleep patterns and mortality(死亡率). Scientists...
A.
Although it is a common belief that sleeping for at least eight hours a night is vital for health and well—being. the six. year study involving more than 1. 1 million Americans older than 30 found that those who slept for less than eight hours were far from doing themselves any long—term harm。
B.
"Individuals who now average 6. 5 hours of sleep a night Can be reassured that this is a safe amount of sleep. From a health standpoint。there is no reason to sleep longer," said Daniel Kripke , a professor of psychiatry(精神病学)at the University of California, San Diego.
C.
Dr. Kripke said. "We don’t know if long sleep periods lead to death. Additional studies are needed to determine if setting your alarm clock earlier will actually improve your health. "
D.
The scientists. who were funded by the American Cancer Society, found at the best survival rates were among the men and women who slept for seven hours a night. Those who
E.
slept for eight hours were 12 per cent more likely to die during the six—year period of the study,
F.
when other factors such as diet and smoking were taken into account.
G.
Even those who spent a mere five hours a night in bed lived longer than those who slept eight or more hours. However, an increasing death rate was found among those who slept for less than five hours.
H.
Dr. Kripke said. "Previous sleep studies have indicated that both short-and long-duration(持续时间)sleep had higher mortality rates. However, none of those studies were large enough to distinguish the difference between seven and eight hours a night, until flow. \
【单选题】孕产妇死亡率是（）
A.
人群健康学指标
B.
日常生活质量指标
C.
临床健康学指标
D.
社会健康学指标
E.
人群生活状况指标
【单选题】粗死亡率的定义是
A.
按性别计算的所有死亡者占全人群的比例
B.
一定时期内，所有患者中死于某病的频率
C.
在所有死亡者中死于某病的比例
D.
一定时期内，总死亡人数占该人群同期平均人口数的比例
E.
按病种计算的某病的所有死亡者占全人群的比例
【单选题】Driving cars, trucks and motorcycles is an important part of our lives. We do it every day to get to work, to school, to friends’ houses and so on. Driving can make our life convenient, but can also c...
A.
Right.
B.
Wrong.
C.
Doesn’t say.
【单选题】该社区年度总死亡率为（）
A.
0.90‰
B.
2.00‰
C.
0.50‰
D.
1.20‰
E.
125%某社E年均人口为10万，年内肿瘤患者共400人，年内共死亡200人，其中60岁以上死亡90人；在全部死亡者中，因肿瘤死亡人数为50人，该社区年内共出生120人。
【单选题】新生儿死亡率是指
A.
出生28天内死亡的新生儿在同期活产总数中的比值
B.
出生30天内死亡的新生儿在同期活产总数中的比值
C.
出生14天内死亡的新生儿在同期活产总数中的比值
D.
出生28天内死亡伪新生儿在同期分娩总数中的比值
E.
出生1年内死亡的新生儿在同期活产总数中的比值
【单选题】下列因素与腹部伤的死亡率无关的是（）
A.
受伤距早期救治的时间
B.
火器伤还是钝性伤
C.
有无内脏损伤及合并伤
D.
患者的全身情况及对创伤的耐受性
E.
急救措施和治疗技术
【单选题】计算标准化死亡率的目的是
A.
减少死亡率估计的系统误差
B.
减少死亡率估计的抽样误差
C.
便于不同时间死亡率的比较
D.
便于不同人群死亡率的比较
E.
消除内部构成不同而便于比较
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