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Table 3 Interpretation of Pearson correlation coefficients

From: Selective measurement of α smooth muscle actin: why β-actin can not be used as a housekeeping gene when tissue fibrosis occurs

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