Reference

All functions
chi_squared_test()	Pearson chi-squared conditional independence test (λ = 1).
cressie_read_test()	Cressie–Read conditional independence test (λ = 2/3).
freeman_tukey_test()	Freeman–Tukey conditional independence test (λ = −1/2).
log_likelihood_test()	Log-likelihood ratio (G-test) conditional independence test (λ = 0).
modified_likelihood_test()	Modified log-likelihood ratio conditional independence test (λ = −1).
pearson_correlation_test()	Pearson partial correlation conditional independence test.
pearson_equivalence_test()	Pearson equivalence CI test (TOST): declares independence when the partial correlation lies within [-delta_threshold, delta_threshold].