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  2. Stratified randomization - Wikipedia

    en.wikipedia.org/wiki/Stratified_randomization

    Stratified randomization may also refer to the random assignment of treatments to subjects, in addition to referring to random sampling of subjects from a population, as described above. Simple random sampling after stratification step. In this context, stratified randomization uses one or multiple prognostic factors to make subgroups, on ...

  3. Stratification (clinical trials) - Wikipedia

    en.wikipedia.org/wiki/Stratification_(clinical...

    Stratification (clinical trials) Stratification of clinical trials is the partitioning of subjects and results by a factor other than the treatment given. Stratification can be used to ensure equal allocation of subgroups of participants to each experimental condition. This may be done by gender, age, or other demographic factors.

  4. Minimisation (clinical trials) - Wikipedia

    en.wikipedia.org/wiki/Minimisation_(clinical_trials)

    Minimisation is a method of adaptive stratified sampling that is used in clinical trials, as described by Pocock and Simon. [1] [2] The aim of minimisation is to minimise the imbalance between the number of patients in each treatment group over a number of factors. Normally patients would be allocated to a treatment group randomly and while ...

  5. Cochran–Mantel–Haenszel statistics - Wikipedia

    en.wikipedia.org/wiki/Cochran–Mantel–Haenszel...

    Cochran–Mantel–Haenszel statistics. In statistics, the Cochran–Mantel–Haenszel test ( CMH) is a test used in the analysis of stratified or matched categorical data. It allows an investigator to test the association between a binary predictor or treatment and a binary outcome such as case or control status while taking into account the ...

  6. Randomized controlled trial - Wikipedia

    en.wikipedia.org/wiki/Randomized_controlled_trial

    A randomized controlled trial (or randomized control trial; [ 2] RCT) is a form of scientific experiment used to control factors not under direct experimental control. Examples of RCTs are clinical trials that compare the effects of drugs, surgical techniques, medical devices, diagnostic procedures, diets or other medical treatments. [ 3][ 4]

  7. Multistage sampling - Wikipedia

    en.wikipedia.org/wiki/Multistage_sampling

    In statistics, multistage sampling is the taking of samples in stages using smaller and smaller sampling units at each stage. [ 1] Multistage sampling can be a complex form of cluster sampling because it is a type of sampling which involves dividing the population into groups (or clusters). Then, one or more clusters are chosen at random and ...

  8. List of analyses of categorical data - Wikipedia

    en.wikipedia.org/wiki/List_of_analyses_of...

    Coefficient of colligation - Yule's Y. Coefficient of consistency. Coefficient of raw agreement. Conger's Kappa. Contingency coefficient – Pearson's C. Cramér's V. Dice's coefficient. Fleiss' kappa. Goodman and Kruskal's lambda.

  9. Stratified sampling - Wikipedia

    en.wikipedia.org/wiki/Stratified_sampling

    Stratified sampling example In statistical surveys , when subpopulations within an overall population vary, it could be advantageous to sample each subpopulation ( stratum ) independently. Stratification is the process of dividing members of the population into homogeneous subgroups before sampling.