Skip to main content

Advertisement

Table 1 Trends in the use of t-tests and non-parametric tests in the NEJM

From: t-tests, non-parametric tests, and large studies—a paradox of statistical practice?

Statistical procedure 1978–1979 1989 2004–2005
t-tests 44% 39% 26%
Non-parametric tests 11% 21% 27%
  1. one-sample, two-sample, and matched-pair [2].
  2. Wilcoxon-Mann-Whitney, sign, and Wilcoxon signed rank sum [2].