The Dutch Healthy Diet index (DHD-index): an instrument to measure adherence to the Dutch Guidelines for a Healthy Diet

Table 4 Distribution of characteristics (means (SD)) across sex-specific quintiles of the DHD-index in 749 Dutch men and women*

	Sex-specific quintiles of Dutch Healthy Diet index
	1 (n = 148)	2 (n = 150)	3 (n = 151)	4 (n = 149)	5 (n = 150)	P for trend
Age (y)	24.8 (3.7)	25.1 (3.5)	24.8 (3.5)	24.7 (3.5)	25.4 (3.7)	0.346
BMI (kg/m²)	23.9 (3.9)	24.1 (4.2)	23.6 (4.2)	24.1 (3.9)	24.0 (3.9)	0.799
Energy intake (MJ/day)	11.1 (3.5)	10.4 (3.2)	9.8 (3.0)	9.3 (3.0)	8.3 (2.7)	<0.001
Supplements (%)	28.2	20.8	32.5	24.7	29.3	0.750
Diet regime^† (%)	2.0	5.4	10.6	4.6	12.0	0.005
Education^‡ (%)						0.059
Low	25.7	28.0	23.8	20.8	15.2
Moderate	44.6	46.7	44.4	55.0	50.1
High	29.7	25.3	31.8	24.2	33.8

*cut-off quintiles men: 47.7, 54.9, 60.6, 67.2.
cut-off quintiles women: 50.4, 56.5, 62.7, 70.6.
^†Diet regime: Salt restriction, fat/cholesterol restriction, diabetes, energy restricted, energy restricted (own initiative), light digestible, lactose restricted, vegetarian (no meat/fish), antroposophical, other.
^‡low education=primary school, vocational and lower general secondary education. Moderate=higher secondary education and intermediate vocational training. High=higher vocational education and university.

ISSN: 1475-2891