Table 1.

General characteristics of children

Parameter	Boys	Girls	P-Value
N	327	493
Age (years)	14.9±1.6	14.8±1.6	NS
BMI (kg/m2)	23.1±0.4	22.9±0.2	NS
25-OH Vitamin D (nmol/l)	37.3±0.9	28.5±0.7	<0.001
Vitamin D Status
Deficient (%)	22.0	49.5
Insufficient (%)	59.6	45.6	<0.001
Sufficient (%)	16.2	2.2
Desirable (%)	2.1	2.6
How many times do you consume fresh milk (≈ 240 ml)?
One to three times per day	38.7	35.4	<0.001
One to two times per week	19.3	23.9
Three to five times per week	20.3	12.5
Three to five times per month	12.8	9.8
Chose not to answer	8.9	18.4
How many times do you consume powdered milk (≈ 240 ml)?
One to three times per day	26.1	18.6	0.02
One to two times per week	18.5	16.9
Three to five times per week	15.5	13.4
Three to five times per month	14.9	16.1
Chose not to answer	25.1	34.9
How many times do you consume laban (≈ 240 ml)?
One to three times per day	23.9	24.5	0.02
One to two times per week	34.7	26.2
Three to five times per week	16.7	15.1
Three to five times per month	14.4	13.6
Chose not to answer	10.4	20.6
How many times do you consume yoghurt (≈ 170 ml)?
One to three times per day	22.4	21.4	0.04
One to two times per week	25.6	32.7
Three to five times per week	21.4	13.9
Three to five times per month	14.4	15.3
Chose not to answer	16.3	16.7
How many times do you consume cheese?
One to three times per day	40.2	44.1	NS
One to two times per week	24.4	24.6
Three to five times per week	17.4	15.8
Three to five times per month	9.6	6.8
Chose not to answer	8.4	8.8

Note: Data presented as percentage (%) for frequencies; mean ± standard deviation for continuous variables. P-value significant at <0.05.