Table 1.

Consumption frequency of fruits and vegetables (F&V; times/d) in 2010 and 2011, as well as respective changes^{( 47 )}, in the intervention and control groups of primary-school children aged 6–11 years, North Rhine-Westphalia, Germany

	Intervention group (n 390)			Control group (n 109)
	Mean	sd	Median	Mean	sd	Median	Significance
Intervention v. control group
2010	1·26	1·37	1·00	1·31	1·26	1·00	P=0·458*
2011	2·02	1·33	2·00	1·18	1·34	1·00	P=0·000*
Change (2011–2010)	+0·76	1·66	1·00	−0·13	1·39	0·00	P=0·000*
2010 v. 2011
	1·26 to 2·02						P=0·000†
				1·31 to 1·18			P=0·325†

^*Mann–Whitney U test for two independent samples.

^†Wilcoxon test for two dependent samples: 2010 v. 2011.