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Table 2: Correlation between plaque index and vitamin B12 levels using Karl Pearson’s correlation
| PI | Vitamin B12 | ||||||
| PI | Pearson’s correlation | 1 | –0.663** | ||||
| Sig. (2-tailed) | 0.000 | ||||||
| N | 42 | 42 | |||||
| Vitamin B12 | Pearson’s correlation | –0.663** | 1 | ||||
| Sig. (2-tailed) | 0.000 | ||||||
| N | 42 | 42 |
**Correlation is significant at the 0.01 level (2-tailed)
