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Interpretation of Pearson’s correlation coefficient
| Pearson correlation coefficient | Chan et al. interpretation | |
|---|---|---|
| + 1 | − 1 | Perfect |
| + 0.9 | − 0.9 | Very strong |
| + 0.8 | − 0.8 | Very strong |
| + 0.7 | − 0.7 | Moderate |
| + 0.6 | − 0.6 | Moderate |
| + 0.5 | − 0.5 | Fair |
| + 0.4 | − 0.4 | Fair |
| + 0.3 | − 0.3 | Fair |
| + 0.2 | − 0.2 | Poor |
| + 0.1 | − 0.1 | Poor |
| 0 | 0 | None |
