Non-inferiority and Equivalence Studies Calculator

Please select the outcome type above to determine the required sign of the margin.

Enter any non-zero value. The calculator automatically creates symmetric limits using the absolute value: −|δ| (lower) and +|δ| (upper). Equivalence is declared when the entire CI falls within these limits.

Please select the outcome type above to determine the required value of the margin.

Enter any positive ratio other than 1. If you enter a value above 1 (e.g. 1.25), the lower limit is set as its inverse (0.80). If you enter a value below 1 (e.g. 0.80), the upper limit is set as its inverse (1.25). Equivalence is declared when the entire CI falls within these limits.

Please select the outcome direction above.

Enter any non-zero value. Symmetric limits −|δ| and +|δ| are generated automatically. Equivalence is declared when the entire CI falls within these limits.

Please select the outcome type above to determine the required value of the margin.

Enter any positive ratio other than 1. If you enter above 1 (e.g. 1.25), the lower limit is its inverse (0.80). If below 1 (e.g. 0.80), the upper limit is its inverse (1.25).