> wilcox.test(JCR.Impact.Factor~Group,data=data)

	Wilcoxon rank sum test with continuity correction

data:  JCR.Impact.Factor by Group
W = 409, p-value = 0.0005501
alternative hypothesis: true location shift is not equal to 0

Message d'avis :
Dans wilcox.test.default(x = c(39.89, 3.718, 79.321, 8.483, 39.89,  :
  cannot compute exact p-value with ties
> wilcox.test(Citations.per.month~Group,data=data)

	Wilcoxon rank sum test with continuity correction

data:  Citations.per.month by Group
W = 647, p-value = 0.6004
alternative hypothesis: true location shift is not equal to 0

> wilcox.test(Days.to.completion~Group,data=data)

	Wilcoxon rank sum test with continuity correction

data:  Days.to.completion by Group
W = 183.5, p-value = 0.2049
alternative hypothesis: true location shift is not equal to 0

Message d'avis :
Dans wilcox.test.default(x = c(15L, 34L, 58L, 195L, 46L, 43L, 98L,  :
  cannot compute exact p-value with ties
> wilcox.test(Screened.articles.per.author~Group,data=data)

	Wilcoxon rank sum test with continuity correction

data:  Screened.articles.per.author by Group
W = 1126, p-value = 0.008981
alternative hypothesis: true location shift is not equal to 0

> wilcox.test(Full.texts.inspected.per.author~Group,data=data)

	Wilcoxon rank sum test with continuity correction

data:  Full.texts.inspected.per.author by Group
W = 504.5, p-value = 0.004611
alternative hypothesis: true location shift is not equal to 0

> wilcox.test(Screened.to.included.ratio~Group,data=data)

	Wilcoxon rank sum test with continuity correction

data:  Screened.to.included.ratio by Group
W = 1443, p-value = 1.851e-08
alternative hypothesis: true location shift is not equal to 0

> wilcox.test(Full.texts.inspected.to.included.ratio~Group,data=data)

	Wilcoxon rank sum test with continuity correction

data:  Full.texts.inspected.to.included.ratio by Group
W = 883.5, p-value = 0.4813
alternative hypothesis: true location shift is not equal to 0

> wilcox.test(AMSTAR.2.rating~Group,data=data)

	Wilcoxon rank sum test with continuity correction

data:  AMSTAR.2.rating by Group
W = 740.5, p-value = 0.1192
alternative hypothesis: true location shift is not equal to 0

> chisq.test(matrix(c(5,15,6,54),nrow=2), correct=FALSE)

	Pearson's Chi-squared test

data:  matrix(c(5, 15, 6, 54), nrow = 2)
X-squared = 2.8458, df = 1, p-value = 0.09161

Message d'avis :
Dans chisq.test(matrix(c(5, 15, 6, 54), nrow = 2), correct = FALSE) :
  Chi-squared approximation may be incorrect
> chisq.test(matrix(c(5,15,3,57),nrow=2), correct=FALSE)

	Pearson's Chi-squared test

data:  matrix(c(5, 15, 3, 57), nrow = 2)
X-squared = 6.6667, df = 1, p-value = 0.009823

Message d'avis :
Dans chisq.test(matrix(c(5, 15, 3, 57), nrow = 2), correct = FALSE) :
  Chi-squared approximation may be incorrect
> chisq.test(matrix(c(12,8,27,33),nrow=2), correct=FALSE)

	Pearson's Chi-squared test

data:  matrix(c(12, 8, 27, 33), nrow = 2)
X-squared = 1.3508, df = 1, p-value = 0.2451

> chisq.test(matrix(c(12,8,48,12),nrow=2), correct=FALSE)

	Pearson's Chi-squared test

data:  matrix(c(12, 8, 48, 12), nrow = 2)
X-squared = 3.2, df = 1, p-value = 0.07364

