PH516L: Parmar In Class Activities

Which biases explains "validity can be compromised due to normal changes in the study particpants over time"

Which of the following is defined as the occurence of one event precludes the occurrence of the others?

Study participants self-monitoring their blood pressure lead to altered outcome, this is an example of which bias?

Which is defined as the org & mathematical manipulation of data, used to describe characteristics studied

As a researcher, you have to make sure that the comparing groups are _____ prior to running an experiment

Used to determine probability of rare events when the # of trials is large & the probability of any 1 occurance is small

Which of the following study designs provides a current snapshot of the study?

If A, B & C are indepedent then P(A, B, C) = ?

Surveys and polls are mostly used in which study?

_____ (%) = 100 X TP/(TP + FN)

Which of the following parameters describes the population?

The disease is actually absent yet the test identified the disease to be present would be:

The disease is actually present yet test identified the disease to be absent would be:

Which of the following is/are measure/s of variability?

To reject the null hypothesis (H₀) when in fact H₀ is true

Lit that is not found in published journals e.g. doctoral thesis & technical reports are included under the category of:

The quantitative synthesis of systematic review is called:

Describes the number of successes X observed in n independent trials, each w/ the same probability of occurence

__ provides the strongest evidence for concluding causation; provides best insurance that result was due to intervention

It's correct to analyze medians of test and control groups when:

Forest plots & funnel plots are used for quantification of means & are represented by calculation of _____?

If A, B & C are mutually exclusive events, then P(A or B or C) = ??

The proportion of the pop w/ disease when the presence of the disease is indicated by diagnostic tests

Which study design may also be called "prospective study" conducted on a sample?

Exposure increases risk of disease

Cohort, case control, cross sectional & case series belongs to which of the following broad category of study design?

SEM will provide an estimate of the scatter about the true but unknown population mean.

Which of the following uses published info from other studies & combines the results to permit an overall conclusion?

An hypothesis that states a difference exists between two (or more) population studied is:

If the mean, median and the mode are equal that means:

The ability of a test to reliably detect the absence of disease

Systemic review & meta analysis are useful when?

Nt does not equal Nc

Differences in the baseline characters in selection of the test and the control groups causes which bias?

Best way to reduce investigator bias

1 minus the probability of the event itself is: