Table 3.

Definition and descriptive statistics of variables in a representative sample of 13 131 German households with food purchase data from 2011

	n	Mean	sd	%
Household income: net monthly income (1000€)†	13 131	2·261	1·050
No. of persons in the household	13 131	2·400	1·200
Age of the person mainly responsible for food purchases in the household (years)	13 112	52·400	15·500
Children aged 0–6 years in the household	13 131			13·00
Children aged 7–13 years in the household	13 115			16·98
Children aged 14–17 years in the household	13 107			6·04
Single household, male	13 131			10·30
Single household, female	13 131			12·80
Lower education (principal wage earner)‡	13 131			26·40
Higher education (principal wage earner)§	13 131			30·90
Working part-time (person mainly responsible for food purchases)	13 131			23·20
Working full-time (person mainly responsible for food purchases)	13 131			26·30
High price awareness (person mainly responsible for food purchases)	11 643			42·40

^†Net monthly income reported in seventeen income intervals. The mean of each interval was chosen as the income of the respective household. Lowest interval: less than 499€. Highest interval: 5000€ or more.

^‡Nine years of elementary school but no additional professional training (Hauptschule ohne Berufsausbildung).

^§University degree (Fachhochschule/Hochschule/Staatsexamen).