which one is not the characteristics of epidemiology ?
what is the fundamental difference between observational and experimental methods in epidemiological studies ?
what is the difference between epidemiology and clinical medicine ?
please describe the major function of epidemiology
the relationship between numerator and denominator in rate
the relationship between incidence and prevalence
is it correct that the mortality rate of hydrophobia is 100%
what are the two parts of da?
what is the study to compare the history of oral contraceptives between patients with cervical carcinoma and other patients hospitalized at the same time in order to explore the relationship between oral contraceptives and cervical carcinoma ?
what is the numerator of incidence in an exposed population during a certain period ?
the definition of prevalence is
a approach to comprehensively describe the distributions of time, population, and region for a disease is
which of the following characteristics do descriptive studies have?
what are the advantages of the prevalence survey study?
which is the method of yzing and researching in groups without inidual data?
which is the characteristics of the sampling survey that are not included?
which is the way to early detection and treatment of patients?
to test the cause of a hypothesis, who should be included in a cohort study?
regarding the historical cohort study, which is wrong with the statement?
from the methodological point of view, what type of research does the cohort study belong to?
which is the most common bias in cohort studies?
what is the nested case-control study?
the advantages and disadvantages of using prevalent case
what are the advantages and disadvantages of matching
can you distinguish the matched and unmatched case-control
what are limitations of case-control studies?
a case-control study is characterized by all of the following except:
which of the following is a case-control study?
state the main advantages and disadvantages of case-control studies
which feature cannot be found in randomized controlled trials
the difference in epidemiological experimental studies compared with prospective cohort studies is
the incorrect statement about screening test is
when the consequences of misdiagnosis are serious, the test is required to have a higher
the indicator that can be used to evaluate the accuracy of the diagnostic test method is
which one is correct about necessary cause ?
one factor and a disease are both related to another factor.the resulting statistical asssociation between the disease and another factor is called
which of the aspects of the included literatureis required to appraise?
when conducting a system review, you need
why conduct a systematic review?
the function of meta-ysis does not include
in the meta-ysis, the purpose of the heterogeneity test is
causes of heterogeneity were differences between studies with respect to
how to deal with heterogeneity?
the description of meta-ysis is correct
including only published studies can introduce publication bias?
which is right about validity and reliability
which of the following statements is not true?
critical appraisal of a research includes:
five steps of evidence-based medicine include:
which is right about validity and reliability
why do you need to appraise the research evidence?
if your food is ______, this means it has been cooked too long but you can still eat it.
______is used in a lot of dishes. it is a vegetable like an onion.
at a ______dinner, you must not wear causal clothes like flip flops and jeans.
when you have food outside and sit on the ground and sandwiches, that is a_____.
the meat we get from pigs is called _______.
some restaurants only accept _______ as a form of payment so make sure that you have enough on you.
if you are satisfied with the service in a restaurant, you can give the waiter a big ______.
if you are not satisfied with the service in a restaurant, you could make a ______.
i am familiar _________ this book but that book is not familiar ________ me.
he told us the story _________.
chinese cuisine has a number of different genres, but the most influential and typical known by the public are the “eight cuisines”.
fried fish was first brought to england by an italian person.
some newer modifications to the recipe may have cornflour added.
british fish and chips are served in a wrapping of old newspapers now.
originally，pizza is a kind of food for the rich, it has now become a dish for everyone.
barley was the most common ingredient used to prepare the form of the pizza.
the common people ate pork and mutton while the nobles enjoyed beef in the middle ages.
by eighteenth century, china had become a famous beef consuming country.
before eating steak, you need to check whether the knife teeth clear.
there is another meaning of potluck, that is: eat whatever you have.
by eighteenth century, ___________ had become a famous beef consuming country.
the main way to cook steak is to _________ and barbecue.
the ancestor of pizza is the simple ________ .
many pizza _________ will even deliver their food right to your front door!
fish and chips is a _________ dish of english origin consisting of fried battered fish and hot chips.
the oking rate of boys is increasing rapidly with ________ .
chinese cuisine is known for its __________ and philosophical and aesthetic qualities.
jiangsu cuisine developed from the __________ recipes of yangzhou，suzhou and nanjing.
eating hot pot is not simply about dipping all ___________ of food into boiling liquid, it’s also an opportunity to have a great time with friends gathered around a simmering pot.
the traditional chinese food, which has chinese characteristics and is accepted by foreigners, is expressed in ____________ .
what do you have ____________ supper?
she isn' t good ___________ maths. could you help her __________ her maths?
we should learn ____________ each other.
are you ____________ music?
when ____________ mary ____________ to school?
what do you often do ____________ sunday morning?
there ____________ a lot of food at home.
do you have ____________ to buy a computer?
what about ____________ computer games.
excuse me, we can't ____________ our tickets.
___________________ are young pioneers.
the birds are singing ____________ the tree.
we are doing ____________.
some girls are on the hill. where are ____________?
what are they doing? they ____________.
how do you_____this book?
who teaches_____english this team?
she doesn’t like milk but likes orange______.
there are _____pens_____pencils in the box.
he is_____american.i’m_____english.
british fish and chips are served in a wrapping of old newspapers now.
originally，pizza is a kind of food for the rich, it has now become a dish for everyone.
barley was the most common ingredient used to prepare the form of the pizza.
youyou tu discovered artemisinin, a drug that has significantly reduced the mortality rates for patients suffering from malaria.
any exercise program needs a balance of both aerobic and resistance exercises.
the origin of the marathon begins in 490ad.
the younger generation who born with the explosion of technology is facing a safe time.
we should improve our quality, take care of public facilities, and enjoy the benefits of shared economy.
online learners might work at different times, and also they can choose the place for study.
different people came to the us from different nations and places at different times.
during tv time people can put down their cell phone and talk with others sitting around.
westerners seem to be less romantic when it comes to choosing gifts and presents.
a house-warming party is a party given to celebrate moving into a new house.
generally speaking, the higher score of a hotel means that the comprehensive service is lower.
chinese outbound touri is growing slowly.
there are many people oking, although everyone knows oking is harmful to us.
sports shoes are more appropriate than leather shoes in workplace.
the key is to find what works for you and then plan your time accordingly.
as the business owner, you're also chief salesperson for your company.
before eating steak, you need to check whether the knife teeth clear.
the traditional chinese food, which has chinese characteristics and is accepted by foreigners, is expressed in ____________ .
in 1896 the first________ set up the marathon project.
any exercise program needs a balance of both aerobic and________ exercises.
the main way to cook steak is to _________ and barbecue.
then select the room, you will see the ______and price of each room.
on the fourth thursday of november, _________day in america is a time to offer thanks, of family gatherings and holiday meals.
_________ is a new thing, and its appearance has brought convenience to our life.
generally speaking, online learning means learning some _________ online.
men are most likely to make mistakes in selecting .
resume is an that you will use to sell yourself to a prospective employer.