Could you check this for the grammatical errors

Hi,

Could you check the following for the grammatical errors?

"The sample size should be computed according to the primary outcome of the study. In this study, however, due to the lack of relevant clinical trials, Cohen's standardized effect size, with type I error of 0.05 and type II error of 20% (power=80%) was used. We also considered a Cohen's value of 0.65."

Thanks!