McNemar's Test Calculator

Determine marginal homogeneity for paired data

	After: Positive	After: Negative
Before: Positive
Before: Negative

Significance Level (α)

Yates's Continuity Correction

Tip: The test only uses the discordant pairs (Before+ / After-) and (Before- / After+). Yates correction is recommended.

Chi-Square

14.0192

Degrees of Freedom

P-Value

0.00018

Result

Significant

Reject the null hypothesis. There is a significant difference between the proportions before and after the intervention.

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About McNemar's Test Calculator

McNemar's test assesses the significance of the difference between two correlated proportions, such as might be found in the case where the two proportions are based on the same sample of subjects or on matched-pair samples. It is widely used in before-and-after studies.

McNemar's Test Calculator Features

Focuses on discordant pairs
Optional Yates's continuity correction
Instant significance interpretation

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