secondary analysis


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secondary analysis

any inquiry based on the reanalysis of previously analysed research data, e.g. publicly available data such as CENSUS data, or data available from data banks such as the ESRC Data Archive at Essex University. The advantages of using such data are their relative cheapness, since the data do not have to be collected, and the opportunity they can afford for longitudinal historical or cross-cultural analysis. The main disadvantage is that the researcher has far less control over the construction of variables and often has only limited knowledge of the manner and circumstances in which the data were collected. see also OFFICIAL STATISTICS.
References in periodicals archive ?
The secondary analysis arose from the investigators conviction that CHF has been understudied in women.
A secondary analysis of a double-blind trial originally designed to test the potential of phenobarbital and vitamin K for the prevention of severe intracranial hemorrhage in premature newborns found "absolutely no differences" in intelligence, behavior, or head circumference in children treated prenatally with these drugs, compared with those given placebo, Dr.
This study is a secondary analysis of data on the attitudinal and behavioral effects of the crime prevention campaign, "Take a Bite Out of Crime," initiated in 1979 and delivered by television, radio, newspapers, and magazines.
A prospectively defined, secondary analysis of the interaction between specific Class I Major Histocompatability Complex (MHC) genes and the product's efficacy also showed a highly statistically significant improvement in disease free survival in patients who expressed either Class I MHC human leukocyte antigen (HLA) A2 or C3 genes (p=0.
The secondary analysis arose from the investigators' conviction that CHF has been understudied in women.
A secondary analysis of the study data revealed that although resistant virus may become undetectable during the treatment interruptions, it persists in many patients at extremely low levels, and may re-emerge quickly after treatment is resumed.
He presented a new secondary analysis of data from the Study to Prevent Noninsulin-Dependent Diabetes Mellitus (STOP-NIDDM) trial.
The new data he presented concerned a secondary analysis involving cardiovascular end points.
This key finding of a new secondary analysis of the Perindopril Protection Against Recurrent Stoke Study (PROGRESS) was greeted enthusiastically at the 24th Congress of the European-Society of Cardiology.
In a secondary analysis which was able to adjust for baseline variables, the 25mg marimastat group and the gemcitabine group were not significantly different from each other with respect to survival.
This key finding of a new secondary analysis of the Perindopril Protection Against Recurrent Stroke Study (PROGRESS) was greeted enthusiastically at the 24th Congress of the European Society of Cardiology PROGRESS randomized 6,105 hypertensive or nonhypertensive patients on standard secondary prevention regimens for prior stroke or TIA to placebo or to 4 mg/day of the long-acting ACE inhibitor perindopril, with the addition of 2.