Convert p-value from 0.01 to 0.05 significance level

Hi there,

I need the between group effect p-value with significance level of 0.05. However, the article reports the 0.01 significance level. The article gives the mean change of intervention and control group and the 99% confidence intervals. No z-values whatsoever.

Can someone help me calculate the right p-value?


Best regards,


Less is more. Stay pure. Stay poor.
Of note, changing alpha (level of significant) changes the cut-off for significance and as you almost allude to above, you would also change your precision estimates accordingly. So, 95% CIs would become 99% CIs.