Table 1.

Awareness rate of nutrition knowledge items among students at the pre- and post-intervention in the NE school and in the Control school

Nutrition knowledge item	Time	NE school	Control school	χ 2	P
Grain and cereals are the main energy source	Pre-intervention	63.1	42.6	5.287	0.021
	Post-intervention	89.2	59.0	15.162	0.000
Breakfast is the most important meal	Pre-intervention	61.5	70.5	1.122	0.289
	Post-intervention	92.3	83.6	2.272	0.132
People should drink at least six glasses of water (250 ml/glass) each day	Pre-intervention	32.3	16.4	4.296	0.038
	Post-intervention	89.2	42.6	30.761	0.000
The main function of dairy products is to build strong teeth and bones	Pre-intervention	50.8	36.1	2.766	0.096
	Post-intervention	95.4	59.0	24.081	0.000
The main function of vegetables is to protect against infections	Pre-intervention	16.9	14.8	0.111	0.739
	Post-intervention	98.5	52.5	36.710	0.000
Dairy products and beans are richer in calcium	Pre-intervention	76.9	62.3	3.197	0.074
	Post-intervention	98.5	80.3	11.183	0.001
Vegetables and fruits are richer in vitamin C	Pre-intervention	90.8	86.9	0.481	0.488
	Post-intervention	100.0	98.4	1.074	0.300
Meat is richer in protein	Pre-intervention	26.2	31.1	0.385	0.535
	Post-intervention	87.7	54.1	17.402	0.000
The symptoms of food poisoning depend on the types of causative germ	Pre-intervention	16.9	23.0	0.719	0.397
	Post-intervention	89.2	50.8	22.384	0.000
Inadequate preservation is most responsible for food poisoning	Pre-intervention	63.1	68.9	0.467	0.494
	Post-intervention	92.3	85.2	1.589	0.207