Table 4.
Within-groups effects (paired t test)
| Variable | Group | Pretest | Post-test | t | P | d | ||
|---|---|---|---|---|---|---|---|---|
| M | sd | M | sd | |||||
| NL test | E | 0·8 | 0·1 | 1·0 | 0·0 | −14·04*** | <0·001 | 2·06 |
| C | 0·9 | 0·1 | 0·8 | 0·0 | 1·68 | 0·099 | 0·55 | |
| NL scale | E | 4·3 | 1·0 | 4·9 | 0·7 | −4·23*** | <0·001 | 0·60 |
| C | 4·3 | 1·1 | 4·5 | 0·9 | −1·18 | 0·244 | 0·17 | |
| Healthy eating behaviour | E | 3·2 | 0·7 | 3·5 | 0·5 | −4·78*** | <0·001 | 0·68 |
| C | 3·0 | 0·7 | 3·2 | 0·7 | −1·56 | 0·126 | 0·23 | |
Note. NL, nutrition literacy; M, mean; t, t value; d, Cohen’s d; Group E, experimental group who received the online NL programme (n 49); Group C, control group who did not receive any nutrition education (n 49).
***
P value < 0·001.