> The study results suggest repeating the experiment with a larger sample pool and introducing randomized controlled trials covering more clinical parameters.
You're writing like you disagree, but in the sentence after that the actual "claim" says to do exactly what you suggest(get more data).
"Was associated with a slight decrease of mean" is a claim. The p=0.05 convention requires that you report that the mean was not found to be different from the comparison distribution.
You're writing like you disagree, but in the sentence after that the actual "claim" says to do exactly what you suggest(get more data).