Table 1. Comparison of gingival index between the toothpastes.
| Time | Study groups | N | Mean (SD) | Minimum | Maximum | Median (Q1–Q3) | Wilcoxon signed-rank test | |
|---|---|---|---|---|---|---|---|---|
| z | p -Value | |||||||
| Baseline | Toothpaste 1 | 20 | 0.14 (0.18) | 0 | 0.71 | 0.08 (0–0.19) | −0.88 | 0.38 (NS) |
| Toothpaste 2 | 20 | 0.12 (0.16) | 0 | 0.5 | 0.04 (0–0.16) | |||
| 3 days | Toothpaste 1 | 20 | 0.12 (0.14) | 0 | 0.5 | 0.08 (0.01–0.13) | −3.34 | 0.001 a |
| Toothpaste 2 | 20 | 0.05 (0.08) | 0 | 0.3 | 0.04(0–0.04) | |||
| Change b | Toothpaste 1 | 20 | 0.03 (0.09) | −0.21 | 0.21 | 0 (0–0.07) | −1.02 | 0.31 (NS) |
| Toothpaste 2 | 20 | 0.06 (0.10) | 0 | 0.36 | 0.04 (0–0.09) | |||
Abbreviation: NS, nonsignificant.
a
p < 0.05 statistically significant, p > 0.05 nonsignificant.
b
Change = change in GI scores from baseline to 3 days. This change is compared between the two toothpastes to know if there is significant change in scores.