Table 3.
Comparison of mean scores of studied variables in Motivational interviewing and Common instruction groups
| Variable | Group | Pre-test | Post-test | Mean difference | 95% confidence interval | p-Value* |
|---|---|---|---|---|---|---|
| Knowledge | MI | 58.6 ± 8.71 | 89.12 ± 6.62 | -30.53 | -32.80 to -28.25 | < 0.001 |
| CI | 53.16 ± 8.22 | 62.81 ± 9.96 | -9.65 | -11.72 to -7.58 | < 0.001 | |
| Attitude | MI | 86.39 ± 10.38 | 95.28 ± 4.48 | -8.89 | -11.94 to -5.84 | < 0.001 |
| CI | 78.06 ± 8/95 | 79.86 ± 8.48 | -1.81 | -3.08 to -0.53 | 0.007 | |
| Mother’s self-reported practice concerning child’s oral health | MI | 19.05 ± 14.08 | 41.19 ± 12.40 | -22.14 | -28.22 to -16.06 | < 0.001 |
| CI | 24.52 ± 15.20 | 26.9 ± 14.73 | -2.38 | -4.84 to -0.08 | 0.573 | |
| Mother’s self-reported practice concerning personal oral health | MI | 53.67 ± 17.9 | 67.0 ± 17.45 | -13.33 | -17.86 to -8.80 | < 0.001 |
| CI | 46.00 ± 18.86 | 48.33 ± 19.13 | -2.33 | -4.67 to 0.00 | 0.050 | |
| Motivation | MI | 18.07 ± 1.34 | 18.93 ± 1.20 | -0.87 | -1.19 to 0.55 | < 0.001 |
| CI | 17.97 ± 1.19 | 18.13 ± 1.25 | -0.17 | -0.36 to 0.03 | 0.096 |
* Paired t-test