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. Author manuscript; available in PMC: 2016 Mar 1.
Published in final edited form as: J Causal Inference. 2014 Aug 1;3(1):25–40. doi: 10.1515/jci-2014-0022

Table 1.

Stopping criteria based on different correlation coefficients

Criterion Continuous Xj Categorical Xj
Pearson/polyserial Pearson ρ polyserial ρ
Spearman Spearman ρ Spearman ρ
Kendall Kendall τ Kendall τ
distance distance r distance r