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. 2017 Apr 27;18:12. doi: 10.1186/s12867-017-0089-9

Table 3.

Interpretation of Pearson correlation coefficients

Size of correlation coefficient Interpretation
0.9 ≤ r ≤ 1 Very high positive correlation
0.7 ≤ r ≤ 0.9 High positive correlation
0.5 ≤ r ≤ 0.7 Moderate positive correlation
0.3 ≤ r ≤ 0.5 Low positive correlation
0 ≤ r ≤ 0.3 Negligible correlation