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2011
Cross-sectional studies are related to sample surveys. In both types of studies a sample S is taken from the target population U, for example by one of the sampling plans presented in Sect. 12.2. The basic difference between the two studies resides in their purpose and, consequently, in the way they are being evaluated. As remarked in Sect.
Klaus Krickeberg +2 more
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Cross-sectional studies are related to sample surveys. In both types of studies a sample S is taken from the target population U, for example by one of the sampling plans presented in Sect. 12.2. The basic difference between the two studies resides in their purpose and, consequently, in the way they are being evaluated. As remarked in Sect.
Klaus Krickeberg +2 more
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1991
Abstract In a cross-sectional study the occurrence (prevalence) of the disease under study for the ‘exposed’ is compared with the same occurrence in the non-exposed. The exposure and disease status is examined for the same time period. We do not have data to establish exposure status before the onset of the disease.
Jørn Olsen +3 more
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Abstract In a cross-sectional study the occurrence (prevalence) of the disease under study for the ‘exposed’ is compared with the same occurrence in the non-exposed. The exposure and disease status is examined for the same time period. We do not have data to establish exposure status before the onset of the disease.
Jørn Olsen +3 more
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2009
Provides a “snapshot” of the frequency and characteristics of a disease in a population at a particular single point in time; basically identical to case-control study except that the variable assumed to be the cause of an event (or disease) is measured at the same time as the assignment of the patient to the event/disease category.
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Provides a “snapshot” of the frequency and characteristics of a disease in a population at a particular single point in time; basically identical to case-control study except that the variable assumed to be the cause of an event (or disease) is measured at the same time as the assignment of the patient to the event/disease category.
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2010
In a cross-sectional study, all in a given population or a random sample from this population define the source population. The disease and its possible determinants are all recorded at a given point in time. This introduces a temporal ambiguity in the possible cause–effect association and for this reason most cross-sectional studies have survey ...
Jørn Olsen +3 more
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In a cross-sectional study, all in a given population or a random sample from this population define the source population. The disease and its possible determinants are all recorded at a given point in time. This introduces a temporal ambiguity in the possible cause–effect association and for this reason most cross-sectional studies have survey ...
Jørn Olsen +3 more
openaire +1 more source
1988
In cohort studies, subjects are followed in a forward direction from exposure to outcome, and inferential reasoning is from cause to effect. In case-control studies, subjects are investigated in a backward direction from outcome to exposure; inference is from effect to cause.
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In cohort studies, subjects are followed in a forward direction from exposure to outcome, and inferential reasoning is from cause to effect. In case-control studies, subjects are investigated in a backward direction from outcome to exposure; inference is from effect to cause.
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