Table 1.
Comparison of Mean Servings of Fruits, Juices, and Vegetables Estimated by Direct Observation and HEST Software
| Food item | Correlation between observed and recorded | Mean observed | Mean recorded | Difference ± SE (observed – recorded) | P value |
|---|---|---|---|---|---|
| Fruits | |||||
| Apple | .61*** | .40 | .38 | .02 ±.04 | .51 |
| Orange | .52*** | .57 | .35 | .22 ±.06 | .00 |
| Grapes | .47*** | .79 | .77 | .02 ±.09 | .81 |
| Vegetables | |||||
| Broccoli | .41*** | .51 | .40 | .11 ±.07 | .10 |
| Corn | .52*** | .59 | .60 | − .01 ±.07 | .91 |
| Carrots | .65*** | .35 | .40 | −.05 ±.06 | .39 |
| Juices | |||||
| Orange | .57*** | .79 | .63 | .16 ±.05 | .00 |
| Apple | .04 * | .96 | .79 | .17 ±.07 | .01 |
| 100% juice blend | .24*** | .95 | .69 | .26 ±.06 | .00 |
| HEST | .51*** | 5.92 | 5.00 | .92 ±.33 | .01 |
All comparisons were based on matched observations and HEST entries provided by 60 participants. Values shown in the last column indicate the level of significance for paired-samples t tests comparing mean observed and mean recorded intake.
**
Comparison of mean observed intake with mean recorded intake significant at P = 0.01, determined by correlation analysis.
***
Comparison of mean observed intake with mean recorded intake significant at P = 0.001, determined by correlation analysis.