Table 4 Comparison of mean scores of knowledge, attitude, perceived behavioral control, subjective norms, behavioral intention and nutritional performance of pregnant women in experimental and control groups before and three months after educational intervention
| Variable | group |
Before intervention M ± SD |
After intervention M ± SD | P-value |
|---|---|---|---|---|
| Knowledge | Experimental | 4.14 ± 1.25 | 8.19 ± 1.05 | 0.001 |
| Control | 4.25 ± 1.08 | 4.39 ± 1.14 | 0.262 | |
| The significance level | 0.258 | 0.001 | ||
| Attitude | Experimental | 26.14 ± 4.55 | 50.24 ± 4.28 | 0.001 |
| Control | 28.50 ± 4.16 | 29.18 ± 4.22 | 0.233 | |
| The significance level | 0.239 | 0.001 | ||
| Perceived behavioral control | Experimental | 10.26 ± 1.73 | 20.88 ± 1.64 | 0.001 |
| Control | 10.15 ± 1.66 | 11.02 ± 1.68 | 0.237 | |
| The significance level | 0.287 | 0.001 | ||
| Subjective Norms | Experimental | 13.18 ± 1.92 | 23.10 ± 1.70 | 0.001 |
| Control | 12.58 ± 1.89 | 13.35 ± 1.78 | 0.253 | |
| The significance level | 0.241 | 0.001 | ||
| Behavioral intention | Experimental | 15.86 ± 1.40 | 25.57 ± 1.66 | 0.001 |
| Control | 14.17 ± 1.62 | 16.02 ± 1.58 | 0.214 | |
| The significance level | 0.224 | 0.001 | ||
| Performance | Experimental | 17.05 ± 2.21 | 31.03 ± 2.19 | 0.001 |
| Control | 18.06 ± 2.27 | 19.26 ± 2.34 | 0.251 | |
| The significance level | 0.245 | 0.001 | ||
| paired t-test | ||||