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Deprecated: Implicit conversion from float 219.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Shanghai+Arch+Psychiatry ä ; 29 (3): 184-8 Nephropedia Template TP
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The Differences and Similarities Between Two-Sample T-Test and Paired T-Test #MMPMID28904516
FRALICK D; ZHENG JZ; Wang B; TU XM; FENG C
Shanghai Arch Psychiatry ä[]; 29 (3): 184-8 PMID28904516show ga
In clinical research, comparisons of the results from experimental and control groups are often encountered. The two-sample t-test (also called independent samples t-test) and the paired t-test are probably the most widely used tests in statistics for the comparison of mean values between two samples. However, confusion exists with regard to the use of the two test methods, resulting in their inappropriate use. In this paper, we discuss the differences and similarities between these two t-tests. Three examples are used to illustrate the calculation procedures of the two-sample t-test and paired t-test.