Table 2.
Participants’ performances on the survey instruments.
| Questionnaire | Parameter | TL– (with no time limit) |
TL+ (with time limit) |
Statistical test |
| CoNKS (consumer-oriented nutrition knowledge scale) | ||||
|
|
Total score, mean (SD) | 16.5 (1.9) | 15.3 (1.7) | t 61=2.73, P=.008 |
|
|
median (range) | 17.0 (11-20) | 15.5 (12-18) |
|
|
|
Non-response items, n (%; 95% CI) | 1/620 (0.2; 0-0.8) | 6/640 (0.9; 0-2) | Fisher’s exact test, P=.13 |
| AHQ (ad hoc questionnaire) | ||||
|
|
Total score, mean (SD) | 3.1 (2.6) | 2.6 (1.9) | t 61=0.89, P=.38 |
|
|
median (range) | 3.0 (0-10) | 2.5 (0-7) |
|
|
|
Score ≥5,n (%; 95% CI) | 7/31 (22.6; 11-40) | 6/32 (18.8; 8-35) | χ 2 1=0, P=.95 |
|
|
Non-response items, n (%; 95% CI) | 23/310 (7.4; 5-11) | 29/320 (9.1; 6-13) | χ 2 1=0.37, P=.55 |