PMC:2495064 / 8804-9055 JSONTXT

{"project":"2_test","denotations":[{"id":"18674747-16532401-2049172","span":{"begin":169,"end":171},"obj":"16532401"}],"text":"Statistical Analysis\nFrequencies were compared by calculation of empirical P-values with a Monte Carlo-based simulation approach based on the method of Roff and Bentzen.17 Exact 95% confidence intervals were calculated by the Clopper-Pearson method.18"}