Changes

Hypothesis tests are very commonly used in epidemiological investigations, and a wide number of tests are available. These can be classified into groups according to the [[Data types|data types]] in question, according to whether a specific underlying distribution is assumed when performing the test (in which case, the test is known as a '''parametric test'''), and according to whether or not the data are matched or independent (i.e. whether comparisons are being made at the individual level or the group level).<br>

Hypothesis tests are very commonly used in epidemiological investigations, and a wide number of tests are available. These can be classified into groups according to the [[Data types|data types]] in question, according to whether a specific underlying distribution is assumed when performing the test (in which case, the test is known as a '''parametric test'''), and according to whether or not the data are matched or independent (i.e. whether comparisons are being made at the individual level or the group level).<br>

==Comparing a categorical outcome between different groups==

==Comparing a qualitative variable between different groups==

===Independent samples===

====Chi-square test====

===Matched designs===

====Fisher's exact test====

==Comparing a quantitative outcome between different groups==

==Comparing a quantitative variable between different groups==

====t-test====

===Independent samples===

====Mann-Whitney U test====

====Two groups====

====More than two groups====

===More than two groups===

====ANOVA====

===Matched designs===

====Kruskal-Wallis====

====Two groups====

==Comparing two quantitative outcomes (matched designs)==

 

 

 

==Comparing two quantitative outcomes between matched observations==

 

====Spearman's rank correlation coefficient====

[[Category:Veterinary Epidemiology - Statistical Methods|F]]

[[Category:Veterinary Epidemiology - Statistical Methods|F]]