Table 2

Mean and SD of the school-level mean scores for total nutrition knowledge, and its sub-domains, at baseline and at follow-up in the intervention and control schools.

Baseline

Follow-up

Intervention n = 12

Control n = 13

Intervention n = 12

Control n = 13

*Estimated difference at follow up (95% CI)

*p value

Total number of pupils

511

639

502

631

Total score (max. 36)

28.3(1.1)

27.3(2.0)

29.2(0.8)

27.6(2.1)

1.1(0.05 to 2.16)

0.042

Balanced diet domain (max. 15)

11.6(0.4)

11.3(0.9)

12.1(0.5)

11.5(0.9)

0.6(0.1 to 1.1)

0.018

Balance of Good Health Plate domain (max. 5)

3.7(0.4)

3.5(0.4)

4.1(0.4)

3.6(0.3)

0.3(0.0 to 0.6)

0.041

Ability to identify healthier foods (max. 15)

12.1(0.6)

11.6(0.9)

12.1(0.4)

11.6(1.0)

0.3(-0.3 to 0.8)

0.375

* p value and estimated difference in mean score between intervention and control schools at follow-up was adjusted for deprivation (percentage of children receiving free school meals), school size, and baseline score; also weighted for school size.

Lakshman et al. BMC Public Health 2010 10:123   doi:10.1186/1471-2458-10-123