Group | Before intervention | After intervention | 1Â month after the intervention | 3Â month after the intervention | P value* |
---|---|---|---|---|---|
Control group | 29.69 ± 9.63 | 31.25 ± 1.62 | 36.62 ± 9.08 | 36.67 ± 8.97 | < 0.001 |
Multimedia education group | 32.25 ± 10.86 | 21.15 ± 8.66 | 18.6 ± 7.04 | 18.47 ± 6.99 | < 0.001 |
multimedia education in combination with Teach-Back method | 31.32 ± 10.41 | 11.37 ± 6.95 | 9.37 ± 5.85 | 8.72 ± 5.74 | < 0.001 |
P value** | 0.590 | < 0.001 | < 0.001 | < 0.001 |  |