Minimally invasive video-assisted thyroidectomy and transoral video-assisted thyroidectomy: A comparison of two systematic reviews.

Therefore, Cohen's delta = (TOVAT mean–MIVAT mean)/([TOVAT SD ± MIVAT SD]/2)), and the result was 1.35 which corresponds to a 'very large' effect, as defined in Table 5 .[ 38 , 39 ] The corresponding t -test ( P < 0.00001) was highly significant but, as we stressed in the Methods section, the huge number of patients made it more appropriate to use effect size statistics as opposed to an inferential approach.

also in 132,142 other papers